131638190 has 16 divisors (see below), whose sum is σ = 237163680. Its totient is φ = 52607520.

The previous prime is 131638153. The next prime is 131638207. The reversal of 131638190 is 91836131.

131638190 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×131638190² = 34657226132952200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6935 + ... + 17645.

It is an arithmetic number, because the mean of its divisors is an integer number (14822730).

Almost surely, 2^131638190 is an apocalyptic number.

131638190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131638190 is a deficient number, since it is larger than the sum of its proper divisors (105525490).

131638190 is a wasteful number, since it uses less digits than its factorization.

131638190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11947.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 131638190 is about 11473.3687293663. The cubic root of 131638190 is about 508.6987073676.

The spelling of 131638190 in words is "one hundred thirty-one million, six hundred thirty-eight thousand, one hundred ninety".