18598554001 has 4 divisors (see below), whose sum is σ = 18598827492. Its totient is φ = 18598280512.

The previous prime is 18598553899. The next prime is 18598554017. The reversal of 18598554001 is 10045589581.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 17014593600 + 1583960401 = 130440^2 + 39799^2 .

It is a cyclic number.

It is not a de Polignac number, because 18598554001 - 2⁹ = 18598553489 is a prime.

It is a super-2 number, since 2×18598554001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18598554701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53325 + ... + 200101.

It is an arithmetic number, because the mean of its divisors is an integer number (4649706873).

Almost surely, 2^18598554001 is an apocalyptic number.

It is an amenable number.

18598554001 is a deficient number, since it is larger than the sum of its proper divisors (273491).

18598554001 is a wasteful number, since it uses less digits than its factorization.

18598554001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273490.

The product of its (nonzero) digits is 288000, while the sum is 46.

The spelling of 18598554001 in words is "eighteen billion, five hundred ninety-eight million, five hundred fifty-four thousand, one".