138351571 has 8 divisors (see below), whose sum is σ = 142896960. Its totient is φ = 133877952.

The previous prime is 138351541. The next prime is 138351607. The reversal of 138351571 is 175153831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138351571 - 2⁵ = 138351539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138351541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14011 + ... + 21748.

It is an arithmetic number, because the mean of its divisors is an integer number (17862120).

Almost surely, 2^138351571 is an apocalyptic number.

138351571 is a deficient number, since it is larger than the sum of its proper divisors (4545389).

138351571 is an equidigital number, since it uses as much as digits as its factorization.

138351571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35885.

The product of its digits is 12600, while the sum is 34.

The square root of 138351571 is about 11762.2944615411. The cubic root of 138351571 is about 517.2033926187.

The spelling of 138351571 in words is "one hundred thirty-eight million, three hundred fifty-one thousand, five hundred seventy-one".