18290729163 has 20 divisors (see below), whose sum is σ = 28450563688. Its totient is φ = 10451841120.

The previous prime is 18290729071. The next prime is 18290729189. The reversal of 18290729163 is 36192709281.

It is not a de Polignac number, because 18290729163 - 2¹⁰ = 18290728139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18290729363) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1262458 + ... + 1276863.

Almost surely, 2^18290729163 is an apocalyptic number.

18290729163 is a deficient number, since it is larger than the sum of its proper divisors (10159834525).

18290729163 is an frugal number, since it uses more digits than its factorization.

18290729163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539352 (or 2539331 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The spelling of 18290729163 in words is "eighteen billion, two hundred ninety million, seven hundred twenty-nine thousand, one hundred sixty-three".