138463012 has 6 divisors (see below), whose sum is σ = 242310278. Its totient is φ = 69231504.

The previous prime is 138463001. The next prime is 138463033. The reversal of 138463012 is 210364831.

It can be written as a sum of positive squares in only one way, i.e., 137733696 + 729316 = 11736^2 + 854^2 .

It is a super-2 number, since 2×138463012² = 38344011384224288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17307873 + ... + 17307880.

Almost surely, 2^138463012 is an apocalyptic number.

It is an amenable number.

138463012 is a deficient number, since it is larger than the sum of its proper divisors (103847266).

138463012 is a wasteful number, since it uses less digits than its factorization.

138463012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34615757 (or 34615755 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 138463012 is about 11767.0307214692. The cubic root of 138463012 is about 517.3422229773.

The spelling of 138463012 in words is "one hundred thirty-eight million, four hundred sixty-three thousand, twelve".