11888888819 has 2 divisors, whose sum is σ = 11888888820. Its totient is φ = 11888888818.

The previous prime is 11888888801. The next prime is 11888888831. The reversal of 11888888819 is 91888888811.

It is a strong prime.

It is an emirp because it is prime and its reverse (91888888811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11888888819 - 2¹⁶ = 11888823283 is a prime.

It is a super-2 number, since 2×11888888819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11888888839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5944444409 + 5944444410.

It is an arithmetic number, because the mean of its divisors is an integer number (5944444410).

Almost surely, 2^11888888819 is an apocalyptic number.

11888888819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11888888819 is an equidigital number, since it uses as much as digits as its factorization.

11888888819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18874368, while the sum is 68.

The spelling of 11888888819 in words is "eleven billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred nineteen".