138677159 has 4 divisors (see below), whose sum is σ = 143459160. Its totient is φ = 133895160.

The previous prime is 138677137. The next prime is 138677171. The reversal of 138677159 is 951776831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138677159 - 2¹⁶ = 138611623 is a prime.

It is a super-2 number, since 2×138677159² = 38462708856622562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138677179) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2390957 + ... + 2391014.

It is an arithmetic number, because the mean of its divisors is an integer number (35864790).

Almost surely, 2^138677159 is an apocalyptic number.

138677159 is a deficient number, since it is larger than the sum of its proper divisors (4782001).

138677159 is an equidigital number, since it uses as much as digits as its factorization.

138677159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782000.

The product of its digits is 317520, while the sum is 47.

The square root of 138677159 is about 11776.1266552292. The cubic root of 138677159 is about 517.6087928910.

The spelling of 138677159 in words is "one hundred thirty-eight million, six hundred seventy-seven thousand, one hundred fifty-nine".