138653245 has 16 divisors (see below), whose sum is σ = 173790720. Its totient is φ = 106087104.

The previous prime is 138653239. The next prime is 138653261. The reversal of 138653245 is 542356831.

138653245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 138653245 - 2⁵ = 138653213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4564 + ... + 17266.

It is an arithmetic number, because the mean of its divisors is an integer number (10861920).

Almost surely, 2^138653245 is an apocalyptic number.

It is an amenable number.

138653245 is a deficient number, since it is larger than the sum of its proper divisors (35137475).

138653245 is a wasteful number, since it uses less digits than its factorization.

138653245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12804.

The product of its digits is 86400, while the sum is 37.

The square root of 138653245 is about 11775.1112521284. Note that the first 3 decimals coincide. The cubic root of 138653245 is about 517.5790383918.

The spelling of 138653245 in words is "one hundred thirty-eight million, six hundred fifty-three thousand, two hundred forty-five".