138737895 has 8 divisors (see below), whose sum is σ = 221980656. Its totient is φ = 73993536.

The previous prime is 138737881. The next prime is 138737899. The reversal of 138737895 is 598737831.

138737895 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 138737895 - 2¹¹ = 138735847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138737899) 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, 4624582 + ... + 4624611.

It is an arithmetic number, because the mean of its divisors is an integer number (27747582).

Almost surely, 2^138737895 is an apocalyptic number.

138737895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138737895 is a deficient number, since it is larger than the sum of its proper divisors (83242761).

138737895 is an equidigital number, since it uses as much as digits as its factorization.

138737895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249201.

The product of its digits is 1270080, while the sum is 51.

The square root of 138737895 is about 11778.7051495485. The cubic root of 138737895 is about 517.6843470281.

The spelling of 138737895 in words is "one hundred thirty-eight million, seven hundred thirty-seven thousand, eight hundred ninety-five".