74538016818 has 32 divisors (see below), whose sum is σ = 154247025600. Its totient is φ = 23984511936.

The previous prime is 74538016799. The next prime is 74538016831. The reversal of 74538016818 is 81861083547.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 902293 + ... + 981431.

It is an arithmetic number, because the mean of its divisors is an integer number (4820219550).

Almost surely, 2^74538016818 is an apocalyptic number.

74538016818 is an abundant number, since it is smaller than the sum of its proper divisors (79709008782).

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

74538016818 is a wasteful number, since it uses less digits than its factorization.

74538016818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84586.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 74538016818 in words is "seventy-four billion, five hundred thirty-eight million, sixteen thousand, eight hundred eighteen".