18195840003 has 24 divisors (see below), whose sum is σ = 26690169744. Its totient is φ = 11018275840.

The previous prime is 18195839951. The next prime is 18195840007. The reversal of 18195840003 is 30004859181.

It is not a de Polignac number, because 18195840003 - 2⁶ = 18195839939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18195840007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 412051 + ... + 454067.

It is an arithmetic number, because the mean of its divisors is an integer number (1112090406).

Almost surely, 2^18195840003 is an apocalyptic number.

18195840003 is a deficient number, since it is larger than the sum of its proper divisors (8494329741).

18195840003 is a wasteful number, since it uses less digits than its factorization.

18195840003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43235 (or 43224 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 18195840003 in words is "eighteen billion, one hundred ninety-five million, eight hundred forty thousand, three".