18274904905 has 8 divisors (see below), whose sum is σ = 22289392584. Its totient is φ = 14380252800.

The previous prime is 18274904873. The next prime is 18274904941. The reversal of 18274904905 is 50940947281.

It can be written as a sum of positive squares in 4 ways, for example, as 2663901769 + 15611003136 = 51613^2 + 124944^2 .

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

It is not a de Polignac number, because 18274904905 - 2⁵ = 18274904873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29958556 + ... + 29959165.

It is an arithmetic number, because the mean of its divisors is an integer number (2786174073).

Almost surely, 2^18274904905 is an apocalyptic number.

It is an amenable number.

18274904905 is a deficient number, since it is larger than the sum of its proper divisors (4014487679).

18274904905 is an equidigital number, since it uses as much as digits as its factorization.

18274904905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59917787.

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 18274904905 in words is "eighteen billion, two hundred seventy-four million, nine hundred four thousand, nine hundred five".