138693059 has 8 divisors (see below), whose sum is σ = 144979200. Its totient is φ = 132428296.

The previous prime is 138693031. The next prime is 138693091. The reversal of 138693059 is 950396831.

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

It is not a de Polignac number, because 138693059 - 2⁸ = 138692803 is a prime.

It is a super-2 number, since 2×138693059² = 38471529229554962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138623059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8744 + ... + 18810.

It is an arithmetic number, because the mean of its divisors is an integer number (18122400).

Almost surely, 2^138693059 is an apocalyptic number.

138693059 is a deficient number, since it is larger than the sum of its proper divisors (6286141).

138693059 is a wasteful number, since it uses less digits than its factorization.

138693059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10689.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 138693059 is about 11776.8017305209. The cubic root of 138693059 is about 517.6285742435.

The spelling of 138693059 in words is "one hundred thirty-eight million, six hundred ninety-three thousand, fifty-nine".