18770215464 has 384 divisors, whose sum is σ = 68789710080. Its totient is φ = 4465152000.

The previous prime is 18770215459. The next prime is 18770215483. The reversal of 18770215464 is 46451207781.

18770215464 is a `hidden beast` number, since 1 + 87 + 7 + 0 + 21 + 546 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9872914 + ... + 9874814.

It is an arithmetic number, because the mean of its divisors is an integer number (179139870).

Almost surely, 2^18770215464 is an apocalyptic number.

18770215464 is a gapful number since it is divisible by the number (14) 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 18770215464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34394855040).

18770215464 is an abundant number, since it is smaller than the sum of its proper divisors (50019494616).

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

18770215464 is a wasteful number, since it uses less digits than its factorization.

18770215464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2081 (or 2074 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 18770215464 in words is "eighteen billion, seven hundred seventy million, two hundred fifteen thousand, four hundred sixty-four".