19297115136 has 352 divisors, whose sum is σ = 62767897920. Its totient is φ = 5819793408.

The previous prime is 19297115119. The next prime is 19297115137. The reversal of 19297115136 is 63151179291.

It is a junction number, because it is equal to n+sod(n) for n = 19297115091 and 19297115100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19297115137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19048966 + ... + 19049978.

Almost surely, 2^19297115136 is an apocalyptic number.

19297115136 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 19297115136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31383948960).

19297115136 is an abundant number, since it is smaller than the sum of its proper divisors (43470782784).

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

19297115136 is a wasteful number, since it uses less digits than its factorization.

19297115136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108 (or 1084 counting only the distinct ones).

The product of its digits is 102060, while the sum is 45.

The spelling of 19297115136 in words is "nineteen billion, two hundred ninety-seven million, one hundred fifteen thousand, one hundred thirty-six".