138791295 has 48 divisors (see below), whose sum is σ = 254592000. Its totient is φ = 69750720.

The previous prime is 138791293. The next prime is 138791321. The reversal of 138791295 is 592197831.

It is not a de Polignac number, because 138791295 - 2¹ = 138791293 is a prime.

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 138791295.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138791291) 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, 231406 + ... + 232004.

It is an arithmetic number, because the mean of its divisors is an integer number (5304000).

Almost surely, 2^138791295 is an apocalyptic number.

138791295 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138791295 is a deficient number, since it is larger than the sum of its proper divisors (115800705).

138791295 is a wasteful number, since it uses less digits than its factorization.

138791295 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900 (or 897 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 138791295 is about 11780.9717341143. The cubic root of 138791295 is about 517.7507571417.

The spelling of 138791295 in words is "one hundred thirty-eight million, seven hundred ninety-one thousand, two hundred ninety-five".