138369718 has 8 divisors (see below), whose sum is σ = 207631800. Its totient is φ = 69159120.

The previous prime is 138369713. The next prime is 138369719. The reversal of 138369718 is 817963831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138369713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5248 + ... + 17443.

It is an arithmetic number, because the mean of its divisors is an integer number (25953975).

Almost surely, 2^138369718 is an apocalyptic number.

138369718 is a deficient number, since it is larger than the sum of its proper divisors (69262082).

138369718 is a wasteful number, since it uses less digits than its factorization.

138369718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25742.

The product of its digits is 217728, while the sum is 46.

The square root of 138369718 is about 11763.0658418628. The cubic root of 138369718 is about 517.2260047692.

The spelling of 138369718 in words is "one hundred thirty-eight million, three hundred sixty-nine thousand, seven hundred eighteen".