18316466040 has 32 divisors (see below), whose sum is σ = 54949398480. Its totient is φ = 4884390912.

The previous prime is 18316466023. The next prime is 18316466041. The reversal of 18316466040 is 4066461381.

It is a self number, because there is not a number n which added to its sum of digits gives 18316466040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18316466041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76318489 + ... + 76318728.

Almost surely, 2^18316466040 is an apocalyptic number.

18316466040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18316466040 is an abundant number, since it is smaller than the sum of its proper divisors (36632932440).

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

18316466040 is a wasteful number, since it uses less digits than its factorization.

18316466040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152637231 (or 152637227 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 18316466040 in words is "eighteen billion, three hundred sixteen million, four hundred sixty-six thousand, forty".