138347092 has 12 divisors (see below), whose sum is σ = 260731156. Its totient is φ = 63852480.

The previous prime is 138347089. The next prime is 138347137. The reversal of 138347092 is 290743831.

It can be written as a sum of positive squares in 2 ways, for example, as 13220496 + 125126596 = 3636^2 + 11186^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1330209 + ... + 1330312.

Almost surely, 2^138347092 is an apocalyptic number.

It is an amenable number.

138347092 is a deficient number, since it is larger than the sum of its proper divisors (122384064).

138347092 is a wasteful number, since it uses less digits than its factorization.

138347092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660538 (or 2660536 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 138347092 is about 11762.1040634744. The cubic root of 138347092 is about 517.1978112364.

The spelling of 138347092 in words is "one hundred thirty-eight million, three hundred forty-seven thousand, ninety-two".