18797314536 has 1152 divisors, whose sum is σ = 76634812800. Its totient is φ = 4075868160.

The previous prime is 18797314513. The next prime is 18797314541. The reversal of 18797314536 is 63541379781.

18797314536 is a `hidden beast` number, since 1 + 8 + 7 + 97 + 3 + 14 + 536 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 354666286 + ... + 354666338.

It is an arithmetic number, because the mean of its divisors is an integer number (66523275).

Almost surely, 2^18797314536 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 18797314536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38317406400).

18797314536 is an abundant number, since it is smaller than the sum of its proper divisors (57837498264).

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

18797314536 is a wasteful number, since it uses less digits than its factorization.

18797314536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 145 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

It can be divided in two parts, 18797 and 314536, that added together give a palindrome (333333).

The spelling of 18797314536 in words is "eighteen billion, seven hundred ninety-seven million, three hundred fourteen thousand, five hundred thirty-six".