18256002274 has 4 divisors (see below), whose sum is σ = 27384003414. Its totient is φ = 9128001136.

The previous prime is 18256002257. The next prime is 18256002277. The reversal of 18256002274 is 47220065281.

It is a happy number.

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., 15127278049 + 3128724225 = 122993^2 + 55935^2 .

It is not an unprimeable number, because it can be changed into a prime (18256002277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4564000567 + ... + 4564000570.

Almost surely, 2^18256002274 is an apocalyptic number.

18256002274 is a deficient number, since it is larger than the sum of its proper divisors (9128001140).

18256002274 is an equidigital number, since it uses as much as digits as its factorization.

18256002274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9128001139.

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 18256002274 in words is "eighteen billion, two hundred fifty-six million, two thousand, two hundred seventy-four".