138078962 has 18 divisors (see below), whose sum is σ = 241136847. Its totient is φ = 59126844.

The previous prime is 138078953. The next prime is 138078971. The reversal of 138078962 is 269870831.

It is an interprime number because it is at equal distance from previous prime (138078953) and next prime (138078971).

It can be written as a sum of positive squares in only one way, i.e., 69039481 + 69039481 = 8309^2 + 8309^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8309.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 115733 + ... + 116919.

Almost surely, 2^138078962 is an apocalyptic number.

138078962 is a deficient number, since it is larger than the sum of its proper divisors (103057885).

138078962 is an frugal number, since it uses more digits than its factorization.

138078962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390 (or 1196 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 138078962 is about 11750.7004897580. The cubic root of 138078962 is about 516.8634687432.

The spelling of 138078962 in words is "one hundred thirty-eight million, seventy-eight thousand, nine hundred sixty-two".