138251134 has 32 divisors (see below), whose sum is σ = 245532672. Its totient is φ = 57132000.

The previous prime is 138251119. The next prime is 138251143. The reversal of 138251134 is 431152831.

It is a happy number.

138251134 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×138251134² = 38226752104571912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199729 + ... + 200419.

It is an arithmetic number, because the mean of its divisors is an integer number (7672896).

Almost surely, 2^138251134 is an apocalyptic number.

138251134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138251134 is a deficient number, since it is larger than the sum of its proper divisors (107281538).

138251134 is a wasteful number, since it uses less digits than its factorization.

138251134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192.

The product of its digits is 2880, while the sum is 28.

The square root of 138251134 is about 11758.0242387911. The cubic root of 138251134 is about 517.0782068761.

The spelling of 138251134 in words is "one hundred thirty-eight million, two hundred fifty-one thousand, one hundred thirty-four".