18352406408 has 64 divisors (see below), whose sum is σ = 40420204800. Its totient is φ = 7646918400.

The previous prime is 18352406393. The next prime is 18352406411. The reversal of 18352406408 is 80460425381.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3704333 + ... + 3709283.

It is an arithmetic number, because the mean of its divisors is an integer number (631565700).

Almost surely, 2^18352406408 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 18352406408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20210102400).

18352406408 is an abundant number, since it is smaller than the sum of its proper divisors (22067798392).

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

18352406408 is a wasteful number, since it uses less digits than its factorization.

18352406408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6790 (or 6786 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 18352406408 in words is "eighteen billion, three hundred fifty-two million, four hundred six thousand, four hundred eight".