138401843674 has 8 divisors (see below), whose sum is σ = 219814692948. Its totient is φ = 65130279360.

The previous prime is 138401843647. The next prime is 138401843683. The reversal of 138401843674 is 476348104831.

It can be written as a sum of positive squares in 2 ways, for example, as 134325915025 + 4075928649 = 366505^2 + 63843^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035321197 + ... + 2035321264.

Almost surely, 2^138401843674 is an apocalyptic number.

138401843674 is a deficient number, since it is larger than the sum of its proper divisors (81412849274).

138401843674 is a wasteful number, since it uses less digits than its factorization.

138401843674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070642480.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 138401843674 in words is "one hundred thirty-eight billion, four hundred one million, eight hundred forty-three thousand, six hundred seventy-four".