18078413964 has 96 divisors (see below), whose sum is σ = 47688775680. Its totient is φ = 5291827200.

The previous prime is 18078413959. The next prime is 18078414041. The reversal of 18078413964 is 46931487081.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253644 + ... + 317004.

It is an arithmetic number, because the mean of its divisors is an integer number (496758080).

Almost surely, 2^18078413964 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 18078413964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23844387840).

18078413964 is an abundant number, since it is smaller than the sum of its proper divisors (29610361716).

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

18078413964 is a wasteful number, since it uses less digits than its factorization.

18078413964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63471 (or 63469 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 18078413964 in words is "eighteen billion, seventy-eight million, four hundred thirteen thousand, nine hundred sixty-four".