18270408005 has 6 divisors (see below), whose sum is σ = 21924852306. Its totient is φ = 14616084608.

The previous prime is 18270407983. The next prime is 18270408017. The reversal of 18270408005 is 50080407281.

It can be written as a sum of positive squares in 3 ways, for example, as 327537604 + 17942870401 = 18098^2 + 133951^2 .

It is a de Polignac number, because none of the positive numbers 2^k-18270408005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 272021 + ... + 332469.

It is an arithmetic number, because the mean of its divisors is an integer number (3654142051).

Almost surely, 2^18270408005 is an apocalyptic number.

It is an amenable number.

18270408005 is a deficient number, since it is larger than the sum of its proper divisors (3654444301).

18270408005 is an frugal number, since it uses more digits than its factorization.

18270408005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120903 (or 60454 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The spelling of 18270408005 in words is "eighteen billion, two hundred seventy million, four hundred eight thousand, five".