188660493 has 12 divisors (see below), whose sum is σ = 311439648. Its totient is φ = 107805960.

The previous prime is 188660489. The next prime is 188660501. The reversal of 188660493 is 394066881.

It is not a de Polignac number, because 188660493 - 2² = 188660489 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188660473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1497243 + ... + 1497368.

It is an arithmetic number, because the mean of its divisors is an integer number (25953304).

Almost surely, 2^188660493 is an apocalyptic number.

It is an amenable number.

188660493 is a deficient number, since it is larger than the sum of its proper divisors (122779155).

188660493 is a wasteful number, since it uses less digits than its factorization.

188660493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994624 (or 2994621 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 188660493 is about 13735.3737845026. The cubic root of 188660493 is about 573.5355226656.

The spelling of 188660493 in words is "one hundred eighty-eight million, six hundred sixty thousand, four hundred ninety-three".