18287423344 has 10 divisors (see below), whose sum is σ = 35431882760. Its totient is φ = 9143711664.

The previous prime is 18287423299. The next prime is 18287423351. The reversal of 18287423344 is 44332478281.

It is a super-2 number, since 2×18287423344² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18287423294 and 18287423303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571481964 + ... + 571481995.

It is an arithmetic number, because the mean of its divisors is an integer number (3543188276).

Almost surely, 2^18287423344 is an apocalyptic number.

It is an amenable number.

18287423344 is a deficient number, since it is larger than the sum of its proper divisors (17144459416).

18287423344 is a wasteful number, since it uses less digits than its factorization.

18287423344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142963967 (or 1142963961 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 46.

The spelling of 18287423344 in words is "eighteen billion, two hundred eighty-seven million, four hundred twenty-three thousand, three hundred forty-four".