18574465253 has 2 divisors, whose sum is σ = 18574465254. Its totient is φ = 18574465252.

The previous prime is 18574465249. The next prime is 18574465267. The reversal of 18574465253 is 35256447581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13818707809 + 4755757444 = 117553^2 + 68962^2 .

It is a cyclic number.

It is not a de Polignac number, because 18574465253 - 2² = 18574465249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18574495253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9287232626 + 9287232627.

It is an arithmetic number, because the mean of its divisors is an integer number (9287232627).

Almost surely, 2^18574465253 is an apocalyptic number.

It is an amenable number.

18574465253 is a deficient number, since it is larger than the sum of its proper divisors (1).

18574465253 is an equidigital number, since it uses as much as digits as its factorization.

18574465253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032000, while the sum is 50.

The spelling of 18574465253 in words is "eighteen billion, five hundred seventy-four million, four hundred sixty-five thousand, two hundred fifty-three".