138513294 has 16 divisors (see below), whose sum is σ = 307807440. Its totient is φ = 46171080.

The previous prime is 138513289. The next prime is 138513299. The reversal of 138513294 is 492315831.

138513294 is a `hidden beast` number, since 138 + 513 + 2 + 9 + 4 = 666.

138513294 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138513289) and next prime (138513299).

It is a super-2 number, since 2×138513294² = 38371865229460872, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138513299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1282477 + ... + 1282584.

It is an arithmetic number, because the mean of its divisors is an integer number (19237965).

Almost surely, 2^138513294 is an apocalyptic number.

138513294 is an abundant number, since it is smaller than the sum of its proper divisors (169294146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138513294 is a wasteful number, since it uses less digits than its factorization.

138513294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565072 (or 2565066 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 138513294 is about 11769.1670903255. The cubic root of 138513294 is about 517.4048386248.

The spelling of 138513294 in words is "one hundred thirty-eight million, five hundred thirteen thousand, two hundred ninety-four".