74718149 has 4 divisors (see below), whose sum is σ = 81510720. Its totient is φ = 67925580.

The previous prime is 74718143. The next prime is 74718169. The reversal of 74718149 is 94181747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74718149 - 2⁸ = 74717893 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 (74718143) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3396269 + ... + 3396290.

It is an arithmetic number, because the mean of its divisors is an integer number (20377680).

Almost surely, 2^74718149 is an apocalyptic number.

It is an amenable number.

74718149 is a deficient number, since it is larger than the sum of its proper divisors (6792571).

74718149 is a wasteful number, since it uses less digits than its factorization.

74718149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792570.

The product of its digits is 56448, while the sum is 41.

The square root of 74718149 is about 8643.9660457454. The cubic root of 74718149 is about 421.1873976479.

The spelling of 74718149 in words is "seventy-four million, seven hundred eighteen thousand, one hundred forty-nine".