19057641156 has 144 divisors (see below), whose sum is σ = 50222914560. Its totient is φ = 6088642560.

The previous prime is 19057641143. The next prime is 19057641157. The reversal of 19057641156 is 65114675091.

19057641156 is a `hidden beast` number, since 19 + 0 + 576 + 4 + 11 + 56 = 666.

It is not an unprimeable number, because it can be changed into a prime (19057641157) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41160981 + ... + 41161443.

It is an arithmetic number, because the mean of its divisors is an integer number (348770240).

Almost surely, 2^19057641156 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 19057641156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25111457280).

19057641156 is an abundant number, since it is smaller than the sum of its proper divisors (31165273404).

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

19057641156 is a wasteful number, since it uses less digits than its factorization.

19057641156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 941 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The spelling of 19057641156 in words is "nineteen billion, fifty-seven million, six hundred forty-one thousand, one hundred fifty-six".