74973149238 has 24 divisors (see below), whose sum is σ = 162367887528. Its totient is φ = 23068660992.

The previous prime is 74973149231. The next prime is 74973149239. The reversal of 74973149238 is 83294137947.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74973149231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36967995 + ... + 36970022.

It is an arithmetic number, because the mean of its divisors is an integer number (6765328647).

Almost surely, 2^74973149238 is an apocalyptic number.

74973149238 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

74973149238 is an abundant number, since it is smaller than the sum of its proper divisors (87394738290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74973149238 is a wasteful number, since it uses less digits than its factorization.

74973149238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73938048 (or 73938035 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 57.

The spelling of 74973149238 in words is "seventy-four billion, nine hundred seventy-three million, one hundred forty-nine thousand, two hundred thirty-eight".