18649410911 has 2 divisors, whose sum is σ = 18649410912. Its totient is φ = 18649410910.

The previous prime is 18649410883. The next prime is 18649410943. The reversal of 18649410911 is 11901494681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18649410911 - 2²² = 18645216607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18649410991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9324705455 + 9324705456.

It is an arithmetic number, because the mean of its divisors is an integer number (9324705456).

Almost surely, 2^18649410911 is an apocalyptic number.

18649410911 is a deficient number, since it is larger than the sum of its proper divisors (1).

18649410911 is an equidigital number, since it uses as much as digits as its factorization.

18649410911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 44.

The spelling of 18649410911 in words is "eighteen billion, six hundred forty-nine million, four hundred ten thousand, nine hundred eleven".