18257582713 has 2 divisors, whose sum is σ = 18257582714. Its totient is φ = 18257582712.

The previous prime is 18257582687. The next prime is 18257582719. The reversal of 18257582713 is 31728575281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15508468089 + 2749114624 = 124533^2 + 52432^2 .

It is a cyclic number.

It is not a de Polignac number, because 18257582713 - 2¹³ = 18257574521 is a prime.

It is a super-4 number, since 4×18257582713⁴ (a number of 42 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (18257582719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9128791356 + 9128791357.

It is an arithmetic number, because the mean of its divisors is an integer number (9128791357).

Almost surely, 2^18257582713 is an apocalyptic number.

It is an amenable number.

18257582713 is a deficient number, since it is larger than the sum of its proper divisors (1).

18257582713 is an equidigital number, since it uses as much as digits as its factorization.

18257582713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 940800, while the sum is 49.

The spelling of 18257582713 in words is "eighteen billion, two hundred fifty-seven million, five hundred eighty-two thousand, seven hundred thirteen".