18309219482 has 4 divisors (see below), whose sum is σ = 27463829226. Its totient is φ = 9154609740.

The previous prime is 18309219457. The next prime is 18309219553. The reversal of 18309219482 is 28491290381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15121374961 + 3187844521 = 122969^2 + 56461^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4577304869 + ... + 4577304872.

Almost surely, 2^18309219482 is an apocalyptic number.

18309219482 is a deficient number, since it is larger than the sum of its proper divisors (9154609744).

18309219482 is an equidigital number, since it uses as much as digits as its factorization.

18309219482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9154609743.

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 18309219482 in words is "eighteen billion, three hundred nine million, two hundred nineteen thousand, four hundred eighty-two".