138888748 has 6 divisors (see below), whose sum is σ = 243055316. Its totient is φ = 69444372.

The previous prime is 138888707. The next prime is 138888767. The reversal of 138888748 is 847888831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17361090 + ... + 17361097.

Almost surely, 2^138888748 is an apocalyptic number.

It is an amenable number.

138888748 is a deficient number, since it is larger than the sum of its proper divisors (104166568).

138888748 is a wasteful number, since it uses less digits than its factorization.

138888748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34722191 (or 34722189 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 55.

The square root of 138888748 is about 11785.1070423650. The cubic root of 138888748 is about 517.8719092158.

The spelling of 138888748 in words is "one hundred thirty-eight million, eight hundred eighty-eight thousand, seven hundred forty-eight".