138853641 has 8 divisors (see below), whose sum is σ = 185350464. Its totient is φ = 92462960.

The previous prime is 138853613. The next prime is 138853697. The reversal of 138853641 is 146358831.

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 138853641 - 2⁷ = 138853513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138853641.

It is not an unprimeable number, because it can be changed into a prime (138853241) 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, 23430 + ... + 28751.

It is an arithmetic number, because the mean of its divisors is an integer number (23168808).

Almost surely, 2^138853641 is an apocalyptic number.

It is an amenable number.

138853641 is a deficient number, since it is larger than the sum of its proper divisors (46496823).

138853641 is an equidigital number, since it uses as much as digits as its factorization.

138853641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53071.

The product of its digits is 69120, while the sum is 39.

The square root of 138853641 is about 11783.6174836083. The cubic root of 138853641 is about 517.8282712646.

The spelling of 138853641 in words is "one hundred thirty-eight million, eight hundred fifty-three thousand, six hundred forty-one".