138380835 has 16 divisors (see below), whose sum is σ = 222636960. Its totient is φ = 73393920.

The previous prime is 138380729. The next prime is 138380843. The reversal of 138380835 is 538083831.

It is not a de Polignac number, because 138380835 - 2⁷ = 138380707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138380793 and 138380802.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22770 + ... + 28199.

It is an arithmetic number, because the mean of its divisors is an integer number (13914810).

Almost surely, 2^138380835 is an apocalyptic number.

138380835 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138380835 is a deficient number, since it is larger than the sum of its proper divisors (84256125).

138380835 is a wasteful number, since it uses less digits than its factorization.

138380835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51158.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 138380835 is about 11763.5383707454. The cubic root of 138380835 is about 517.2398561802.

The spelling of 138380835 in words is "one hundred thirty-eight million, three hundred eighty thousand, eight hundred thirty-five".