138794562 has 36 divisors (see below), whose sum is σ = 319463586. Its totient is φ = 43541760.

The previous prime is 138794507. The next prime is 138794567. The reversal of 138794562 is 265497831.

138794562 is a `hidden beast` number, since 1 + 3 + 87 + 9 + 4 + 562 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 108555561 + 30239001 = 10419^2 + 5499^2 .

It is not an unprimeable number, because it can be changed into a prime (138794567) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 8139 + ... + 18542.

Almost surely, 2^138794562 is an apocalyptic number.

138794562 is an abundant number, since it is smaller than the sum of its proper divisors (180669024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138794562 is a wasteful number, since it uses less digits than its factorization.

138794562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26723 (or 26703 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 138794562 is about 11781.1103890932. The cubic root of 138794562 is about 517.7548195446.

The spelling of 138794562 in words is "one hundred thirty-eight million, seven hundred ninety-four thousand, five hundred sixty-two".