19134990 has 72 divisors (see below), whose sum is σ = 57886920. Its totient is φ = 4372704.

The previous prime is 19134989. The next prime is 19134991. The reversal of 19134990 is 9943191.

It is an interprime number because it is at equal distance from previous prime (19134989) and next prime (19134991).

It is a super-2 number, since 2×19134990² = 732295684600200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19134991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2241 + ... + 6579.

It is an arithmetic number, because the mean of its divisors is an integer number (803985).

Almost surely, 2^19134990 is an apocalyptic number.

19134990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19134990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28943460).

19134990 is an abundant number, since it is smaller than the sum of its proper divisors (38751930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19134990 is a wasteful number, since it uses less digits than its factorization.

19134990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366 (or 4356 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 19134990 is about 4374.3559525946. The cubic root of 19134990 is about 267.4706172053.

It can be divided in two parts, 1913 and 4990, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 19134990 in words is "nineteen million, one hundred thirty-four thousand, nine hundred ninety".