18147373448 has 16 divisors (see below), whose sum is σ = 34028274960. Its totient is φ = 9073166800.

The previous prime is 18147373427. The next prime is 18147373511. The reversal of 18147373448 is 84437374181.

It is a super-2 number, since 2×18147373448² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18147373396 and 18147373405.

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, 111563 + ... + 220773.

It is an arithmetic number, because the mean of its divisors is an integer number (2126767185).

Almost surely, 2^18147373448 is an apocalyptic number.

It is an amenable number.

18147373448 is a deficient number, since it is larger than the sum of its proper divisors (15880901512).

18147373448 is a wasteful number, since it uses less digits than its factorization.

18147373448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129988 (or 129984 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 50.

The spelling of 18147373448 in words is "eighteen billion, one hundred forty-seven million, three hundred seventy-three thousand, four hundred forty-eight".