138607850 has 24 divisors (see below), whose sum is σ = 271381440. Its totient is φ = 52524720.

The previous prime is 138607837. The next prime is 138607853. The reversal of 138607850 is 58706831.

138607850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (138607853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72002 + ... + 73901.

It is an arithmetic number, because the mean of its divisors is an integer number (11307560).

Almost surely, 2^138607850 is an apocalyptic number.

138607850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138607850 is a deficient number, since it is larger than the sum of its proper divisors (132773590).

138607850 is a wasteful number, since it uses less digits than its factorization.

138607850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145934 (or 145929 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 138607850 is about 11773.1835116930. The cubic root of 138607850 is about 517.5225471907.

The spelling of 138607850 in words is "one hundred thirty-eight million, six hundred seven thousand, eight hundred fifty".