18257882311 has 2 divisors, whose sum is σ = 18257882312. Its totient is φ = 18257882310.

The previous prime is 18257882299. The next prime is 18257882341. The reversal of 18257882311 is 11328875281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18257882311 - 2²¹ = 18255785159 is a prime.

It is a super-4 number, since 4×18257882311⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18257882341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9128941155 + 9128941156.

It is an arithmetic number, because the mean of its divisors is an integer number (9128941156).

Almost surely, 2^18257882311 is an apocalyptic number.

18257882311 is a deficient number, since it is larger than the sum of its proper divisors (1).

18257882311 is an equidigital number, since it uses as much as digits as its factorization.

18257882311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 46.

The spelling of 18257882311 in words is "eighteen billion, two hundred fifty-seven million, eight hundred eighty-two thousand, three hundred eleven".