138793502 has 4 divisors (see below), whose sum is σ = 208190256. Its totient is φ = 69396750.

The previous prime is 138793489. The next prime is 138793511. The reversal of 138793502 is 205397831.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34698374 + ... + 34698377.

It is an arithmetic number, because the mean of its divisors is an integer number (52047564).

Almost surely, 2^138793502 is an apocalyptic number.

138793502 is a deficient number, since it is larger than the sum of its proper divisors (69396754).

138793502 is an equidigital number, since it uses as much as digits as its factorization.

138793502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69396753.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 138793502 is about 11781.0654017368. The cubic root of 138793502 is about 517.7535014778.

The spelling of 138793502 in words is "one hundred thirty-eight million, seven hundred ninety-three thousand, five hundred two".