138010816 has 28 divisors (see below), whose sum is σ = 274457160. Its totient is φ = 68856320.

The previous prime is 138010759. The next prime is 138010841. The reversal of 138010816 is 618010831.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31275 + ... + 35413.

Almost surely, 2^138010816 is an apocalyptic number.

138010816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138010816 is a deficient number, since it is larger than the sum of its proper divisors (136446344).

138010816 is an equidigital number, since it uses as much as digits as its factorization.

138010816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672 (or 4662 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 138010816 is about 11747.8004749825. The cubic root of 138010816 is about 516.7784256794.

The spelling of 138010816 in words is "one hundred thirty-eight million, ten thousand, eight hundred sixteen".