19379134656 has 840 divisors, whose sum is σ = 72652225536. Its totient is φ = 5077416960.

The previous prime is 19379134637. The next prime is 19379134657. The reversal of 19379134656 is 65643197391.

19379134656 is a `hidden beast` number, since 1 + 93 + 7 + 91 + 3 + 465 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (19379134657) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 181113355 + ... + 181113461.

Almost surely, 2^19379134656 is an apocalyptic number.

19379134656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19379134656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36326112768).

19379134656 is an abundant number, since it is smaller than the sum of its proper divisors (53273090880).

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

19379134656 is a wasteful number, since it uses less digits than its factorization.

19379134656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 173 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The spelling of 19379134656 in words is "nineteen billion, three hundred seventy-nine million, one hundred thirty-four thousand, six hundred fifty-six".