18164410840 has 16 divisors (see below), whose sum is σ = 40869924480. Its totient is φ = 7265764320.

The previous prime is 18164410819. The next prime is 18164410853. The reversal of 18164410840 is 4801446181.

It is a self number, because there is not a number n which added to its sum of digits gives 18164410840.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 227055096 + ... + 227055175.

It is an arithmetic number, because the mean of its divisors is an integer number (2554370280).

Almost surely, 2^18164410840 is an apocalyptic number.

18164410840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18164410840 is an abundant number, since it is smaller than the sum of its proper divisors (22705513640).

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

18164410840 is a wasteful number, since it uses less digits than its factorization.

18164410840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454110282 (or 454110278 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The spelling of 18164410840 in words is "eighteen billion, one hundred sixty-four million, four hundred ten thousand, eight hundred forty".