2158214999 has 2 divisors, whose sum is σ = 2158215000. Its totient is φ = 2158214998.

The previous prime is 2158214909. The next prime is 2158215041. The reversal of 2158214999 is 9994128512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2158214999 - 2⁸ = 2158214743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2158214909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079107499 + 1079107500.

It is an arithmetic number, because the mean of its divisors is an integer number (1079107500).

Almost surely, 2^2158214999 is an apocalyptic number.

2158214999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158214999 is an equidigital number, since it uses as much as digits as its factorization.

2158214999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 50.

The square root of 2158214999 is about 46456.5926322626. The cubic root of 2158214999 is about 1292.3046355096.

The spelling of 2158214999 in words is "two billion, one hundred fifty-eight million, two hundred fourteen thousand, nine hundred ninety-nine".