138360974 has 4 divisors (see below), whose sum is σ = 207541464. Its totient is φ = 69180486.

The previous prime is 138360949. The next prime is 138360991. The reversal of 138360974 is 479063831.

138360974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 479063831 = 5743 ⋅83417.

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, 34590242 + ... + 34590245.

It is an arithmetic number, because the mean of its divisors is an integer number (51885366).

Almost surely, 2^138360974 is an apocalyptic number.

138360974 is a deficient number, since it is larger than the sum of its proper divisors (69180490).

138360974 is an equidigital number, since it uses as much as digits as its factorization.

138360974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69180489.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 138360974 is about 11762.6941641785. The cubic root of 138360974 is about 517.2151095157.

The spelling of 138360974 in words is "one hundred thirty-eight million, three hundred sixty thousand, nine hundred seventy-four".