17998417930 has 16 divisors (see below), whose sum is σ = 33805724544. Its totient is φ = 6886351120.

The previous prime is 17998417897. The next prime is 17998417933. The reversal of 17998417930 is 3971489971.

It is not an unprimeable number, because it can be changed into a prime (17998417933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39126766 + ... + 39127225.

It is an arithmetic number, because the mean of its divisors is an integer number (2112857784).

Almost surely, 2^17998417930 is an apocalyptic number.

17998417930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

17998417930 is a deficient number, since it is larger than the sum of its proper divisors (15807306614).

17998417930 is a wasteful number, since it uses less digits than its factorization.

17998417930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78254021.

The product of its (nonzero) digits is 3429216, while the sum is 58.

The spelling of 17998417930 in words is "seventeen billion, nine hundred ninety-eight million, four hundred seventeen thousand, nine hundred thirty".