18988710345 has 96 divisors (see below), whose sum is σ = 36933811200. Its totient is φ = 8945354880.

The previous prime is 18988710331. The next prime is 18988710361. The reversal of 18988710345 is 54301788981.

It is not a de Polignac number, because 18988710345 - 2⁸ = 18988710089 is a prime.

It is a super-2 number, since 2×18988710345² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18988710291 and 18988710300.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4233474 + ... + 4237956.

It is an arithmetic number, because the mean of its divisors is an integer number (384727200).

Almost surely, 2^18988710345 is an apocalyptic number.

18988710345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18988710345 is a deficient number, since it is larger than the sum of its proper divisors (17945100855).

18988710345 is a wasteful number, since it uses less digits than its factorization.

18988710345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747 (or 4744 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 18988710345 in words is "eighteen billion, nine hundred eighty-eight million, seven hundred ten thousand, three hundred forty-five".