138668053 has 8 divisors (see below), whose sum is σ = 148078080. Its totient is φ = 129566640.

The previous prime is 138668021. The next prime is 138668059. The reversal of 138668053 is 350866831.

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

It is a cyclic number.

It is not a de Polignac number, because 138668053 - 2⁵ = 138668021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138667997 and 138668015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138668059) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 76225 + ... + 78022.

It is an arithmetic number, because the mean of its divisors is an integer number (18509760).

Almost surely, 2^138668053 is an apocalyptic number.

It is an amenable number.

138668053 is a deficient number, since it is larger than the sum of its proper divisors (9410027).

138668053 is a wasteful number, since it uses less digits than its factorization.

138668053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154307.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 138668053 is about 11775.7400192090. The cubic root of 138668053 is about 517.5974633424.

The spelling of 138668053 in words is "one hundred thirty-eight million, six hundred sixty-eight thousand, fifty-three".