18270463888 has 20 divisors (see below), whose sum is σ = 35582444428. Its totient is φ = 9087897600.

The previous prime is 18270463853. The next prime is 18270463891. The reversal of 18270463888 is 88836407281.

It can be written as a sum of positive squares in 2 ways, for example, as 2361182464 + 15909281424 = 48592^2 + 126132^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2955213 + ... + 2961388.

Almost surely, 2^18270463888 is an apocalyptic number.

It is an amenable number.

18270463888 is a deficient number, since it is larger than the sum of its proper divisors (17311980540).

18270463888 is a wasteful number, since it uses less digits than its factorization.

18270463888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5916802 (or 5916796 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 55.

The spelling of 18270463888 in words is "eighteen billion, two hundred seventy million, four hundred sixty-three thousand, eight hundred eighty-eight".