138113830 has 16 divisors (see below), whose sum is σ = 254669184. Its totient is φ = 53897920.

The previous prime is 138113803. The next prime is 138113861. The reversal of 138113830 is 38311831.

138113830 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168022 + ... + 168841.

It is an arithmetic number, because the mean of its divisors is an integer number (15916824).

Almost surely, 2^138113830 is an apocalyptic number.

138113830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138113830 is a deficient number, since it is larger than the sum of its proper divisors (116555354).

138113830 is a wasteful number, since it uses less digits than its factorization.

138113830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336911.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 138113830 is about 11752.1840523368. The cubic root of 138113830 is about 516.9069715776.

The spelling of 138113830 in words is "one hundred thirty-eight million, one hundred thirteen thousand, eight hundred thirty".