19050990 has 64 divisors (see below), whose sum is σ = 52932096. Its totient is φ = 4298112.

The previous prime is 19050989. The next prime is 19051007. The reversal of 19050990 is 9905091.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 16884 + ... + 17976.

It is an arithmetic number, because the mean of its divisors is an integer number (827064).

Almost surely, 2^19050990 is an apocalyptic number.

19050990 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 19050990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26466048).

19050990 is an abundant number, since it is smaller than the sum of its proper divisors (33881106).

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

19050990 is a wasteful number, since it uses less digits than its factorization.

19050990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193.

The product of its (nonzero) digits is 3645, while the sum is 33.

The square root of 19050990 is about 4364.7439787461. The cubic root of 19050990 is about 267.0786565662.

The spelling of 19050990 in words is "nineteen million, fifty thousand, nine hundred ninety".