188700000406 has 4 divisors (see below), whose sum is σ = 283050000612. Its totient is φ = 94350000202.

The previous prime is 188700000361. The next prime is 188700000421. The reversal of 188700000406 is 604000007881.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47175000100 + ... + 47175000103.

It is an arithmetic number, because the mean of its divisors is an integer number (70762500153).

Almost surely, 2^188700000406 is an apocalyptic number.

188700000406 is the 232195-th centered heptagonal number.

188700000406 is a deficient number, since it is larger than the sum of its proper divisors (94350000206).

188700000406 is an equidigital number, since it uses as much as digits as its factorization.

188700000406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94350000205.

The product of its (nonzero) digits is 10752, while the sum is 34.

The spelling of 188700000406 in words is "one hundred eighty-eight billion, seven hundred million, four hundred six", and thus it is an aban number.