138613786274 has 8 divisors (see below), whose sum is σ = 211843711260. Its totient is φ = 67999215856.

The previous prime is 138613786247. The next prime is 138613786309. The reversal of 138613786274 is 472687316831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 129919156249 + 8694630025 = 360443^2 + 93245^2 .

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

It is a super-3 number, since 3×138613786274³ (a number of 34 digits) contains 333 as substring.

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, 653838509 + ... + 653838720.

Almost surely, 2^138613786274 is an apocalyptic number.

138613786274 is a deficient number, since it is larger than the sum of its proper divisors (73229924986).

138613786274 is a wasteful number, since it uses less digits than its factorization.

138613786274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307677284.

The product of its digits is 8128512, while the sum is 56.

The spelling of 138613786274 in words is "one hundred thirty-eight billion, six hundred thirteen million, seven hundred eighty-six thousand, two hundred seventy-four".