11209890019 has 2 divisors, whose sum is σ = 11209890020. Its totient is φ = 11209890018.

The previous prime is 11209890011. The next prime is 11209890059. The reversal of 11209890019 is 91009890211.

It is an a-pointer prime, because the next prime (11209890059) can be obtained adding 11209890019 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11209890019 - 2³ = 11209890011 is a prime.

It is a super-2 number, since 2×11209890019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11209890011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5604945009 + 5604945010.

It is an arithmetic number, because the mean of its divisors is an integer number (5604945010).

Almost surely, 2^11209890019 is an apocalyptic number.

11209890019 is a deficient number, since it is larger than the sum of its proper divisors (1).

11209890019 is an equidigital number, since it uses as much as digits as its factorization.

11209890019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 40.

The spelling of 11209890019 in words is "eleven billion, two hundred nine million, eight hundred ninety thousand, nineteen".