18720032282 has 8 divisors (see below), whose sum is σ = 32091483936. Its totient is φ = 8022870972.

The previous prime is 18720032269. The next prime is 18720032291. The reversal of 18720032282 is 28223002781.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 668572568 + ... + 668572595.

It is an arithmetic number, because the mean of its divisors is an integer number (4011435492).

Almost surely, 2^18720032282 is an apocalyptic number.

18720032282 is a deficient number, since it is larger than the sum of its proper divisors (13371451654).

18720032282 is a wasteful number, since it uses less digits than its factorization.

18720032282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337145172.

The product of its (nonzero) digits is 21504, while the sum is 35.

The spelling of 18720032282 in words is "eighteen billion, seven hundred twenty million, thirty-two thousand, two hundred eighty-two".