674392877181 has 24 divisors (see below), whose sum is σ = 980638993464. Its totient is φ = 446589711360.

The previous prime is 674392877161. The next prime is 674392877227. The reversal of 674392877181 is 181778293476.

674392877181 is a `hidden beast` number, since 67 + 4 + 392 + 8 + 7 + 7 + 181 = 666.

674392877181 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 113592591225 + 560800285956 = 337035^2 + 748866^2 .

It is not a de Polignac number, because 674392877181 - 2⁵ = 674392877149 is a prime.

It is a super-2 number, since 2×674392877181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674392877101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4471441 + ... + 4619801.

It is an arithmetic number, because the mean of its divisors is an integer number (40859958061).

Almost surely, 2^674392877181 is an apocalyptic number.

It is an amenable number.

674392877181 is a deficient number, since it is larger than the sum of its proper divisors (306246116283).

674392877181 is a wasteful number, since it uses less digits than its factorization.

674392877181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151741 (or 151738 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The spelling of 674392877181 in words is "six hundred seventy-four billion, three hundred ninety-two million, eight hundred seventy-seven thousand, one hundred eighty-one".