138119668 has 12 divisors (see below), whose sum is σ = 248242372. Its totient is φ = 67193280.

The previous prime is 138119659. The next prime is 138119687. The reversal of 138119668 is 866911831.

It is a happy number.

138119668 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 58339044 + 79780624 = 7638^2 + 8932^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466473 + ... + 466768.

Almost surely, 2^138119668 is an apocalyptic number.

It is an amenable number.

138119668 is a deficient number, since it is larger than the sum of its proper divisors (110122704).

138119668 is a wasteful number, since it uses less digits than its factorization.

138119668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933282 (or 933280 counting only the distinct ones).

The product of its digits is 62208, while the sum is 43.

The square root of 138119668 is about 11752.4324290761. The cubic root of 138119668 is about 516.9142546049.

The spelling of 138119668 in words is "one hundred thirty-eight million, one hundred nineteen thousand, six hundred sixty-eight".