674839831181 has 4 divisors (see below), whose sum is σ = 675873277212. Its totient is φ = 673806385152.

The previous prime is 674839831109. The next prime is 674839831189. The reversal of 674839831181 is 181138938476.

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

It can be written as a sum of positive squares in 2 ways, for example, as 345145675081 + 329694156100 = 587491^2 + 574190^2 .

It is a cyclic number.

It is not a de Polignac number, because 674839831181 - 2¹⁴ = 674839814797 is a prime.

It is a super-2 number, since 2×674839831181² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 674839831181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674839831189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516722036 + ... + 516723341.

It is an arithmetic number, because the mean of its divisors is an integer number (168968319303).

Almost surely, 2^674839831181 is an apocalyptic number.

It is an amenable number.

674839831181 is a deficient number, since it is larger than the sum of its proper divisors (1033446031).

674839831181 is a wasteful number, since it uses less digits than its factorization.

674839831181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033446030.

The product of its digits is 6967296, while the sum is 59.

The spelling of 674839831181 in words is "six hundred seventy-four billion, eight hundred thirty-nine million, eight hundred thirty-one thousand, one hundred eighty-one".