138801445 has 8 divisors (see below), whose sum is σ = 166632480. Its totient is φ = 110994000.

The previous prime is 138801437. The next prime is 138801449. The reversal of 138801445 is 544108831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138801445 - 2³ = 138801437 is a prime.

It is a super-2 number, since 2×138801445² = 38531682268176050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138801445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138801449) 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, 11986 + ... + 20524.

It is an arithmetic number, because the mean of its divisors is an integer number (20829060).

Almost surely, 2^138801445 is an apocalyptic number.

It is an amenable number.

138801445 is a deficient number, since it is larger than the sum of its proper divisors (27831035).

138801445 is an equidigital number, since it uses as much as digits as its factorization.

138801445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11795.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 138801445 is about 11781.4025056442. The cubic root of 138801445 is about 517.7633781112.

The spelling of 138801445 in words is "one hundred thirty-eight million, eight hundred one thousand, four hundred forty-five".