18503941707 has 12 divisors (see below), whose sum is σ = 26729421264. Its totient is φ = 12335266320.

The previous prime is 18503941649. The next prime is 18503941717. The reversal of 18503941707 is 70714930581.

It is not a de Polignac number, because 18503941707 - 2²² = 18499747403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18503941717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150082 + ... + 243992.

It is an arithmetic number, because the mean of its divisors is an integer number (2227451772).

Almost surely, 2^18503941707 is an apocalyptic number.

18503941707 is a deficient number, since it is larger than the sum of its proper divisors (8225479557).

18503941707 is a wasteful number, since it uses less digits than its factorization.

18503941707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115810 (or 115807 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 18503941707 in words is "eighteen billion, five hundred three million, nine hundred forty-one thousand, seven hundred seven".