927837981864 has 48 divisors (see below), whose sum is σ = 2516993992500. Its totient is φ = 308774778624.

The previous prime is 927837981823. The next prime is 927837981913. The reversal of 927837981864 is 468189738729.

927837981864 is a `hidden beast` number, since 9 + 2 + 78 + 379 + 8 + 186 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 574324496964 + 353513484900 = 757842^2 + 594570^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 927837981792 and 927837981801.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10466989 + ... + 10555260.

Almost surely, 2^927837981864 is an apocalyptic number.

It is an amenable number.

927837981864 is an abundant number, since it is smaller than the sum of its proper divisors (1589156010636).

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

927837981864 is a wasteful number, since it uses less digits than its factorization.

927837981864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21022874 (or 21022867 counting only the distinct ones).

The product of its digits is 292626432, while the sum is 72.

The spelling of 927837981864 in words is "nine hundred twenty-seven billion, eight hundred thirty-seven million, nine hundred eighty-one thousand, eight hundred sixty-four".