138852361 has 4 divisors (see below), whose sum is σ = 146160400. Its totient is φ = 131544324.

The previous prime is 138852349. The next prime is 138852367. The reversal of 138852361 is 163258831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138852361 - 2²⁷ = 4634633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138852361.

It is not an unprimeable number, because it can be changed into a prime (138852367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3653991 + ... + 3654028.

It is an arithmetic number, because the mean of its divisors is an integer number (36540100).

Almost surely, 2^138852361 is an apocalyptic number.

It is an amenable number.

138852361 is a deficient number, since it is larger than the sum of its proper divisors (7308039).

138852361 is an equidigital number, since it uses as much as digits as its factorization.

138852361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7308038.

The product of its digits is 34560, while the sum is 37.

The square root of 138852361 is about 11783.5631707901. The cubic root of 138852361 is about 517.8266800875.

The spelling of 138852361 in words is "one hundred thirty-eight million, eight hundred fifty-two thousand, three hundred sixty-one".