138563692 has 18 divisors (see below), whose sum is σ = 244504484. Its totient is φ = 68707440.

The previous prime is 138563687. The next prime is 138563699. The reversal of 138563692 is 296365831.

It is not an unprimeable number, because it can be changed into a prime (138563699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 300342 + ... + 300802.

Almost surely, 2^138563692 is an apocalyptic number.

It is an amenable number.

138563692 is a deficient number, since it is larger than the sum of its proper divisors (105940792).

138563692 is an equidigital number, since it uses as much as digits as its factorization.

138563692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089 (or 626 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The square root of 138563692 is about 11771.3079986890. The cubic root of 138563692 is about 517.4675835218.

The spelling of 138563692 in words is "one hundred thirty-eight million, five hundred sixty-three thousand, six hundred ninety-two".