188493906052408 has 16 divisors (see below), whose sum is σ = 385555716925560. Its totient is φ = 85679048205600.

The previous prime is 188493906052379. The next prime is 188493906052429. The reversal of 188493906052408 is 804250609394881.

It is a congruent number.

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, 1070988102483 + ... + 1070988102658.

Almost surely, 2^{188493906052408} is an apocalyptic number.

It is an amenable number.

188493906052408 is an abundant number, since it is smaller than the sum of its proper divisors (197061810873152).

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

188493906052408 is a wasteful number, since it uses less digits than its factorization.

188493906052408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141976205158 (or 2141976205154 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 67.

The spelling of 188493906052408 in words is "one hundred eighty-eight trillion, four hundred ninety-three billion, nine hundred six million, fifty-two thousand, four hundred eight".