19101992 has 64 divisors (see below), whose sum is σ = 46435200. Its totient is φ = 7153920.

The previous prime is 19101989. The next prime is 19101997. The reversal of 19101992 is 29910191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19101997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13142 + ... + 14522.

It is an arithmetic number, because the mean of its divisors is an integer number (725550).

Almost surely, 2^19101992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19101992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23217600).

19101992 is an abundant number, since it is smaller than the sum of its proper divisors (27333208).

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

19101992 is a wasteful number, since it uses less digits than its factorization.

19101992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1422 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 19101992 is about 4370.5825698641. The cubic root of 19101992 is about 267.3167790668.

The spelling of 19101992 in words is "nineteen million, one hundred one thousand, nine hundred ninety-two".