138508301 has 4 divisors (see below), whose sum is σ = 138597600. Its totient is φ = 138419004.

The previous prime is 138508283. The next prime is 138508319. The reversal of 138508301 is 103805831.

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 an interprime number because it is at equal distance from previous prime (138508283) and next prime (138508319).

It is a cyclic number.

It is not a de Polignac number, because 138508301 - 2¹⁴ = 138491917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138508361) 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, 42281 + ... + 45438.

It is an arithmetic number, because the mean of its divisors is an integer number (34649400).

Almost surely, 2^138508301 is an apocalyptic number.

It is an amenable number.

138508301 is a deficient number, since it is larger than the sum of its proper divisors (89299).

138508301 is an equidigital number, since it uses as much as digits as its factorization.

138508301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89298.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 138508301 is about 11768.9549663511. The cubic root of 138508301 is about 517.3986215720.

The spelling of 138508301 in words is "one hundred thirty-eight million, five hundred eight thousand, three hundred one".