18180978003 has 6 divisors (see below), whose sum is σ = 26261412684. Its totient is φ = 12120651996.

The previous prime is 18180977987. The next prime is 18180978007. The reversal of 18180978003 is 30087908181.

It is not a de Polignac number, because 18180978003 - 2⁴ = 18180977987 is a prime.

It is a super-2 number, since 2×18180978003² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18180978003.

It is not an unprimeable number, because it can be changed into a prime (18180978007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1010054325 + ... + 1010054342.

It is an arithmetic number, because the mean of its divisors is an integer number (4376902114).

Almost surely, 2^18180978003 is an apocalyptic number.

18180978003 is a deficient number, since it is larger than the sum of its proper divisors (8080434681).

18180978003 is a wasteful number, since it uses less digits than its factorization.

18180978003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020108673 (or 2020108670 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The spelling of 18180978003 in words is "eighteen billion, one hundred eighty million, nine hundred seventy-eight thousand, three".