18499499411 has 2 divisors, whose sum is σ = 18499499412. Its totient is φ = 18499499410.

The previous prime is 18499499387. The next prime is 18499499413. The reversal of 18499499411 is 11499499481.

It is a strong prime.

It is an emirp because it is prime and its reverse (11499499481) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18499499411 is a prime.

It is a super-3 number, since 3×18499499411³ (a number of 32 digits) contains 333 as substring.

Together with 18499499413, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18499499413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9249749705 + 9249749706.

It is an arithmetic number, because the mean of its divisors is an integer number (9249749706).

Almost surely, 2^18499499411 is an apocalyptic number.

18499499411 is a deficient number, since it is larger than the sum of its proper divisors (1).

18499499411 is an equidigital number, since it uses as much as digits as its factorization.

18499499411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 59.

The spelling of 18499499411 in words is "eighteen billion, four hundred ninety-nine million, four hundred ninety-nine thousand, four hundred eleven".