138237673 has 12 divisors (see below), whose sum is σ = 169271760. Its totient is φ = 112252392.

The previous prime is 138237667. The next prime is 138237679. The reversal of 138237673 is 376732831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (138237667) and next prime (138237679).

It is not a de Polignac number, because 138237673 - 2⁵ = 138237641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138237679) 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, 73311 + ... + 75172.

It is an arithmetic number, because the mean of its divisors is an integer number (14105980).

Almost surely, 2^138237673 is an apocalyptic number.

It is an amenable number.

138237673 is a deficient number, since it is larger than the sum of its proper divisors (31034087).

138237673 is a wasteful number, since it uses less digits than its factorization.

138237673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148516 (or 148509 counting only the distinct ones).

The product of its digits is 127008, while the sum is 40.

The square root of 138237673 is about 11757.4518072582. The cubic root of 138237673 is about 517.0614243359.

The spelling of 138237673 in words is "one hundred thirty-eight million, two hundred thirty-seven thousand, six hundred seventy-three".