2145059899 has 2 divisors, whose sum is σ = 2145059900. Its totient is φ = 2145059898.

The previous prime is 2145059897. The next prime is 2145059909. The reversal of 2145059899 is 9989505412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2145059899 - 2¹ = 2145059897 is a prime.

Together with 2145059897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2145059897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072529949 + 1072529950.

It is an arithmetic number, because the mean of its divisors is an integer number (1072529950).

Almost surely, 2^2145059899 is an apocalyptic number.

2145059899 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145059899 is an equidigital number, since it uses as much as digits as its factorization.

2145059899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1166400, while the sum is 52.

The square root of 2145059899 is about 46314.7913630192. The cubic root of 2145059899 is about 1289.6735946805.

The spelling of 2145059899 in words is "two billion, one hundred forty-five million, fifty-nine thousand, eight hundred ninety-nine".