138197673 has 24 divisors (see below), whose sum is σ = 207342720. Its totient is φ = 88593120.

The previous prime is 138197671. The next prime is 138197681. The reversal of 138197673 is 376791831.

138197673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138197673 - 2¹ = 138197671 is a prime.

It is a super-2 number, since 2×138197673² = 38197193645229858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138197671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72928 + ... + 74798.

It is an arithmetic number, because the mean of its divisors is an integer number (8639280).

Almost surely, 2^138197673 is an apocalyptic number.

It is an amenable number.

138197673 is a deficient number, since it is larger than the sum of its proper divisors (69145047).

138197673 is a wasteful number, since it uses less digits than its factorization.

138197673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2186 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 138197673 is about 11755.7506353274. The cubic root of 138197673 is about 517.0115477918.

The spelling of 138197673 in words is "one hundred thirty-eight million, one hundred ninety-seven thousand, six hundred seventy-three".