18819264682 has 4 divisors (see below), whose sum is σ = 28228897026. Its totient is φ = 9409632340.

The previous prime is 18819264619. The next prime is 18819264701. The reversal of 18819264682 is 28646291881.

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., 15457700241 + 3361564441 = 124329^2 + 57979^2 .

It is a super-2 number, since 2×18819264682² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4704816169 + ... + 4704816172.

Almost surely, 2^18819264682 is an apocalyptic number.

18819264682 is a deficient number, since it is larger than the sum of its proper divisors (9409632344).

18819264682 is an equidigital number, since it uses as much as digits as its factorization.

18819264682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9409632343.

The product of its digits is 2654208, while the sum is 55.

The spelling of 18819264682 in words is "eighteen billion, eight hundred nineteen million, two hundred sixty-four thousand, six hundred eighty-two".