18798420273 has 16 divisors (see below), whose sum is σ = 25633171200. Its totient is φ = 12251116800.

The previous prime is 18798420271. The next prime is 18798420299. The reversal of 18798420273 is 37202489781.

It is not a de Polignac number, because 18798420273 - 2¹ = 18798420271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18798420271) 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 in 15 ways as a sum of consecutive naturals, for example, 368728 + ... + 416601.

It is an arithmetic number, because the mean of its divisors is an integer number (1602073200).

Almost surely, 2^18798420273 is an apocalyptic number.

It is an amenable number.

18798420273 is a deficient number, since it is larger than the sum of its proper divisors (6834750927).

18798420273 is a wasteful number, since it uses less digits than its factorization.

18798420273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785512.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 18798420273 in words is "eighteen billion, seven hundred ninety-eight million, four hundred twenty thousand, two hundred seventy-three".