188315137 has 8 divisors (see below), whose sum is σ = 209887200. Its totient is φ = 167909184.

The previous prime is 188315129. The next prime is 188315147. The reversal of 188315137 is 731513881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 188315137 - 2³ = 188315129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 188315096 and 188315105.

It is not an unprimeable number, because it can be changed into a prime (188315117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291187 + ... + 291832.

It is an arithmetic number, because the mean of its divisors is an integer number (26235900).

Almost surely, 2^188315137 is an apocalyptic number.

188315137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

188315137 is a deficient number, since it is larger than the sum of its proper divisors (21572063).

188315137 is a wasteful number, since it uses less digits than its factorization.

188315137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583055.

The product of its digits is 20160, while the sum is 37.

The square root of 188315137 is about 13722.7962529508. The cubic root of 188315137 is about 573.1853435042.

It can be divided in two parts, 1883 and 15137, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 188315137 in words is "one hundred eighty-eight million, three hundred fifteen thousand, one hundred thirty-seven".