138179559 has 12 divisors (see below), whose sum is σ = 214319544. Its totient is φ = 78959664.

The previous prime is 138179551. The next prime is 138179567. The reversal of 138179559 is 955971831.

It is an interprime number because it is at equal distance from previous prime (138179551) and next prime (138179567).

It is not a de Polignac number, because 138179559 - 2³ = 138179551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138179551) 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, 469852 + ... + 470145.

It is an arithmetic number, because the mean of its divisors is an integer number (17859962).

Almost surely, 2^138179559 is an apocalyptic number.

138179559 is a deficient number, since it is larger than the sum of its proper divisors (76139985).

138179559 is an equidigital number, since it uses as much as digits as its factorization.

138179559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940014 (or 940007 counting only the distinct ones).

The product of its digits is 340200, while the sum is 48.

The square root of 138179559 is about 11754.9801786307. The cubic root of 138179559 is about 516.9889580328.

The spelling of 138179559 in words is "one hundred thirty-eight million, one hundred seventy-nine thousand, five hundred fifty-nine".