2158613393 has 2 divisors, whose sum is σ = 2158613394. Its totient is φ = 2158613392.

The previous prime is 2158613363. The next prime is 2158613417. The reversal of 2158613393 is 3933168512.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1645681489 + 512931904 = 40567^2 + 22648^2 .

It is a cyclic number.

It is not a de Polignac number, because 2158613393 - 2⁶ = 2158613329 is a prime.

It is a super-2 number, since 2×2158613393² = 9319223560877944898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2158613393.

It is not a weakly prime, because it can be changed into another prime (2158613363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079306696 + 1079306697.

It is an arithmetic number, because the mean of its divisors is an integer number (1079306697).

Almost surely, 2^2158613393 is an apocalyptic number.

It is an amenable number.

2158613393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158613393 is an equidigital number, since it uses as much as digits as its factorization.

2158613393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The square root of 2158613393 is about 46460.8802434909. The cubic root of 2158613393 is about 1292.3841479365.

The spelling of 2158613393 in words is "two billion, one hundred fifty-eight million, six hundred thirteen thousand, three hundred ninety-three".