131749738 has 16 divisors (see below), whose sum is σ = 201519360. Its totient is φ = 64586016.

The previous prime is 131749733. The next prime is 131749757. The reversal of 131749738 is 837947131.

It is a junction number, because it is equal to n+sod(n) for n = 131749694 and 131749703.

It is not an unprimeable number, because it can be changed into a prime (131749733) 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 7 ways as a sum of consecutive naturals, for example, 27678 + ... + 32086.

It is an arithmetic number, because the mean of its divisors is an integer number (12594960).

Almost surely, 2^131749738 is an apocalyptic number.

131749738 is a deficient number, since it is larger than the sum of its proper divisors (69769622).

131749738 is a wasteful number, since it uses less digits than its factorization.

131749738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4701.

The product of its digits is 127008, while the sum is 43.

The square root of 131749738 is about 11478.2288703441. The cubic root of 131749738 is about 508.8423543920.

The spelling of 131749738 in words is "one hundred thirty-one million, seven hundred forty-nine thousand, seven hundred thirty-eight".