2161389199 has 2 divisors, whose sum is σ = 2161389200. Its totient is φ = 2161389198.

The previous prime is 2161389187. The next prime is 2161389233. The reversal of 2161389199 is 9919831612.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2161389199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2161389179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080694599 + 1080694600.

It is an arithmetic number, because the mean of its divisors is an integer number (1080694600).

Almost surely, 2^2161389199 is an apocalyptic number.

2161389199 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161389199 is an equidigital number, since it uses as much as digits as its factorization.

2161389199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 49.

The square root of 2161389199 is about 46490.7431538796. The cubic root of 2161389199 is about 1292.9378785666.

The spelling of 2161389199 in words is "two billion, one hundred sixty-one million, three hundred eighty-nine thousand, one hundred ninety-nine".