138524895 has 48 divisors (see below), whose sum is σ = 249600000. Its totient is φ = 70994880.

The previous prime is 138524863. The next prime is 138524899. The reversal of 138524895 is 598425831.

138524895 is a `hidden beast` number, since 1 + 38 + 524 + 8 + 95 = 666.

138524895 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138524895 - 2⁵ = 138524863 is a prime.

It is a super-2 number, since 2×138524895² = 38378293069522050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 138524895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138524899) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 277356 + ... + 277854.

It is an arithmetic number, because the mean of its divisors is an integer number (5200000).

Almost surely, 2^138524895 is an apocalyptic number.

138524895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138524895 is a deficient number, since it is larger than the sum of its proper divisors (111075105).

138524895 is a wasteful number, since it uses less digits than its factorization.

138524895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740 (or 737 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 138524895 is about 11769.6599356141. The cubic root of 138524895 is about 517.4192830770.

The spelling of 138524895 in words is "one hundred thirty-eight million, five hundred twenty-four thousand, eight hundred ninety-five".