19090166992 has 60 divisors (see below), whose sum is σ = 40096650540. Its totient is φ = 8800856064.

The previous prime is 19090166987. The next prime is 19090167013. The reversal of 19090166992 is 29966109091.

It can be written as a sum of positive squares in 6 ways, for example, as 5769313936 + 13320853056 = 75956^2 + 115416^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2724838 + ... + 2731834.

It is an arithmetic number, because the mean of its divisors is an integer number (668277509).

Almost surely, 2^19090166992 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 19090166992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20048325270).

19090166992 is an abundant number, since it is smaller than the sum of its proper divisors (21006483548).

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

19090166992 is a wasteful number, since it uses less digits than its factorization.

19090166992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8040 (or 8021 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 52.

The spelling of 19090166992 in words is "nineteen billion, ninety million, one hundred sixty-six thousand, nine hundred ninety-two".