18618043787474 has 64 divisors (see below), whose sum is σ = 31228131916800. Its totient is φ = 8273148254208.

The previous prime is 18618043787467. The next prime is 18618043787621. The reversal of 18618043787474 is 47478734081681.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263911934 + ... + 263982470.

It is an arithmetic number, because the mean of its divisors is an integer number (487939561200).

Almost surely, 2^{18618043787474} is an apocalyptic number.

18618043787474 is a deficient number, since it is larger than the sum of its proper divisors (12610088129326).

18618043787474 is a wasteful number, since it uses less digits than its factorization.

18618043787474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71907.

The product of its (nonzero) digits is 202309632, while the sum is 68.

The spelling of 18618043787474 in words is "eighteen trillion, six hundred eighteen billion, forty-three million, seven hundred eighty-seven thousand, four hundred seventy-four".