18516841754 has 16 divisors (see below), whose sum is σ = 27888203880. Its totient is φ = 9220807680.

The previous prime is 18516841751. The next prime is 18516841781. The reversal of 18516841754 is 45714861581.

It can be written as a sum of positive squares in 4 ways, for example, as 16234582225 + 2282259529 = 127415^2 + 47773^2 .

It is not an unprimeable number, because it can be changed into a prime (18516841751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1281482 + ... + 1295850.

Almost surely, 2^18516841754 is an apocalyptic number.

18516841754 is a deficient number, since it is larger than the sum of its proper divisors (9371362126).

18516841754 is a wasteful number, since it uses less digits than its factorization.

18516841754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16945.

The product of its digits is 1075200, while the sum is 50.

The spelling of 18516841754 in words is "eighteen billion, five hundred sixteen million, eight hundred forty-one thousand, seven hundred fifty-four".