74815889949 has 32 divisors (see below), whose sum is σ = 111357793280. Its totient is φ = 49644025200.

The previous prime is 74815889933. The next prime is 74815889957. The reversal of 74815889949 is 94998851847.

74815889949 is a `hidden beast` number, since 7 + 481 + 58 + 8 + 9 + 94 + 9 = 666.

It is not a de Polignac number, because 74815889949 - 2⁴ = 74815889933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74815889969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5632614 + ... + 5645880.

It is an arithmetic number, because the mean of its divisors is an integer number (3479931040).

Almost surely, 2^74815889949 is an apocalyptic number.

It is an amenable number.

74815889949 is a deficient number, since it is larger than the sum of its proper divisors (36541903331).

74815889949 is a wasteful number, since it uses less digits than its factorization.

74815889949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14238 (or 14232 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 72.

The spelling of 74815889949 in words is "seventy-four billion, eight hundred fifteen million, eight hundred eighty-nine thousand, nine hundred forty-nine".