74981518 has 24 divisors (see below), whose sum is σ = 118691496. Its totient is φ = 35521200.

The previous prime is 74981503. The next prime is 74981519. The reversal of 74981518 is 81518947.

It is a happy number.

Its product of digits (80640) is a multiple of the sum of its prime factors (720).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74981519) 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, 138328 + ... + 138868.

It is an arithmetic number, because the mean of its divisors is an integer number (4945479).

Almost surely, 2^74981518 is an apocalyptic number.

74981518 is a deficient number, since it is larger than the sum of its proper divisors (43709978).

74981518 is a wasteful number, since it uses less digits than its factorization.

74981518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720 (or 697 counting only the distinct ones).

The product of its digits is 80640, while the sum is 43.

The square root of 74981518 is about 8659.1869133308. The cubic root of 74981518 is about 421.6816890883.

The spelling of 74981518 in words is "seventy-four million, nine hundred eighty-one thousand, five hundred eighteen".