2163617899 has 2 divisors, whose sum is σ = 2163617900. Its totient is φ = 2163617898.

The previous prime is 2163617891. The next prime is 2163617903. The reversal of 2163617899 is 9987163612.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2163617899 - 2³ = 2163617891 is a prime.

It is not a weakly prime, because it can be changed into another prime (2163617891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081808949 + 1081808950.

It is an arithmetic number, because the mean of its divisors is an integer number (1081808950).

Almost surely, 2^2163617899 is an apocalyptic number.

2163617899 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163617899 is an equidigital number, since it uses as much as digits as its factorization.

2163617899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 52.

The square root of 2163617899 is about 46514.7062658682. The cubic root of 2163617899 is about 1293.3821269203.

The spelling of 2163617899 in words is "two billion, one hundred sixty-three million, six hundred seventeen thousand, eight hundred ninety-nine".