188413123 has 4 divisors (see below), whose sum is σ = 188549200. Its totient is φ = 188277048.

The previous prime is 188413111. The next prime is 188413129. The reversal of 188413123 is 321314881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321314881 = 4751 ⋅67631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-188413123 is a prime.

It is a super-2 number, since 2×188413123² = 70999009837226258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (188413129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65940 + ... + 68737.

It is an arithmetic number, because the mean of its divisors is an integer number (47137300).

Almost surely, 2^188413123 is an apocalyptic number.

188413123 is a deficient number, since it is larger than the sum of its proper divisors (136077).

188413123 is a wasteful number, since it uses less digits than its factorization.

188413123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136076.

The product of its digits is 4608, while the sum is 31.

The square root of 188413123 is about 13726.3659793843. The cubic root of 188413123 is about 573.2847414274.

The spelling of 188413123 in words is "one hundred eighty-eight million, four hundred thirteen thousand, one hundred twenty-three".