138919053 has 64 divisors (see below), whose sum is σ = 248209920. Its totient is φ = 67018752.

The previous prime is 138919049. The next prime is 138919061. The reversal of 138919053 is 350919831.

138919053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138919053 - 2² = 138919049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138919093) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 171313 + ... + 172121.

It is an arithmetic number, because the mean of its divisors is an integer number (3878280).

Almost surely, 2^138919053 is an apocalyptic number.

138919053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

138919053 is a deficient number, since it is larger than the sum of its proper divisors (109290867).

138919053 is a wasteful number, since it uses less digits than its factorization.

138919053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 138919053 is about 11786.3927051494. The cubic root of 138919053 is about 517.9095723745.

The spelling of 138919053 in words is "one hundred thirty-eight million, nine hundred nineteen thousand, fifty-three".