18350414464 has 32 divisors (see below), whose sum is σ = 36743087700. Its totient is φ = 9128620032.

The previous prime is 18350414449. The next prime is 18350414501. The reversal of 18350414464 is 46441405381.

It can be written as a sum of positive squares in 2 ways, for example, as 15377984064 + 2972430400 = 124008^2 + 54520^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×18350414464² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338649 + ... + 389080.

Almost surely, 2^18350414464 is an apocalyptic number.

It is an amenable number.

18350414464 is an abundant number, since it is smaller than the sum of its proper divisors (18392673236).

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

18350414464 is an equidigital number, since it uses as much as digits as its factorization.

18350414464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727940 (or 727928 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 18350414464 in words is "eighteen billion, three hundred fifty million, four hundred fourteen thousand, four hundred sixty-four".