74405938185 has 12 divisors (see below), whose sum is σ = 128970292932. Its totient is φ = 39683167008.

The previous prime is 74405938177. The next prime is 74405938273. The reversal of 74405938185 is 58183950447.

74405938185 is a `hidden beast` number, since 7 + 4 + 40 + 593 + 8 + 1 + 8 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14946529536 + 59459408649 = 122256^2 + 243843^2 .

It is not a de Polignac number, because 74405938185 - 2³ = 74405938177 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 826732602 + ... + 826732691.

It is an arithmetic number, because the mean of its divisors is an integer number (10747524411).

Almost surely, 2^74405938185 is an apocalyptic number.

It is an amenable number.

74405938185 is a deficient number, since it is larger than the sum of its proper divisors (54564354747).

74405938185 is a wasteful number, since it uses less digits than its factorization.

74405938185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653465304 (or 1653465301 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 74405938185 in words is "seventy-four billion, four hundred five million, nine hundred thirty-eight thousand, one hundred eighty-five".