18769179911 has 2 divisors, whose sum is σ = 18769179912. Its totient is φ = 18769179910.

The previous prime is 18769179893. The next prime is 18769179931. The reversal of 18769179911 is 11997196781.

It is a weak prime.

It is an emirp because it is prime and its reverse (11997196781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18769179911 - 2²² = 18764985607 is a prime.

It is a super-2 number, since 2×18769179911² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18769179931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9384589955 + 9384589956.

It is an arithmetic number, because the mean of its divisors is an integer number (9384589956).

Almost surely, 2^18769179911 is an apocalyptic number.

18769179911 is a deficient number, since it is larger than the sum of its proper divisors (1).

18769179911 is an equidigital number, since it uses as much as digits as its factorization.

18769179911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 59.

The spelling of 18769179911 in words is "eighteen billion, seven hundred sixty-nine million, one hundred seventy-nine thousand, nine hundred eleven".