138010785 has 24 divisors (see below), whose sum is σ = 242719680. Its totient is φ = 66913440.

The previous prime is 138010759. The next prime is 138010841. The reversal of 138010785 is 587010831.

It is not a de Polignac number, because 138010785 - 2⁸ = 138010529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 36205 + ... + 39834.

It is an arithmetic number, because the mean of its divisors is an integer number (10113320).

Almost surely, 2^138010785 is an apocalyptic number.

138010785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138010785 is a deficient number, since it is larger than the sum of its proper divisors (104708895).

138010785 is a wasteful number, since it uses less digits than its factorization.

138010785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76069 (or 76058 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 138010785 is about 11747.7991555865. The cubic root of 138010785 is about 516.7783869864.

The spelling of 138010785 in words is "one hundred thirty-eight million, ten thousand, seven hundred eighty-five".