18469770273 has 6 divisors (see below), whose sum is σ = 26678557074. Its totient is φ = 12313180176.

The previous prime is 18469770257. The next prime is 18469770281. The reversal of 18469770273 is 37207796481.

It can be written as a sum of positive squares in only one way, i.e., 9310706064 + 9159064209 = 96492^2 + 95703^2 .

It is not a de Polignac number, because 18469770273 - 2⁴ = 18469770257 is a prime.

It is a super-2 number, since 2×18469770273² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18469770233) 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 5 ways as a sum of consecutive naturals, for example, 1026098340 + ... + 1026098357.

It is an arithmetic number, because the mean of its divisors is an integer number (4446426179).

Almost surely, 2^18469770273 is an apocalyptic number.

It is an amenable number.

18469770273 is a deficient number, since it is larger than the sum of its proper divisors (8208786801).

18469770273 is a wasteful number, since it uses less digits than its factorization.

18469770273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052196703 (or 2052196700 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 54.

The spelling of 18469770273 in words is "eighteen billion, four hundred sixty-nine million, seven hundred seventy thousand, two hundred seventy-three".