2158393 has 2 divisors, whose sum is σ = 2158394. Its totient is φ = 2158392.

The previous prime is 2158369. The next prime is 2158423. The reversal of 2158393 is 3938512.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1505529 + 652864 = 1227^2 + 808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2158393 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 5³ + 8⁷ + 3² + 9 + 3¹⁰ .

2158393 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2158333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079196 + 1079197.

It is an arithmetic number, because the mean of its divisors is an integer number (1079197).

2^2158393 is an apocalyptic number.

It is an amenable number.

2158393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2158393 is an equidigital number, since it uses as much as digits as its factorization.

2158393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 31.

The square root of 2158393 is about 1469.1470314438. The cubic root of 2158393 is about 129.2340162584.

The spelling of 2158393 in words is "two million, one hundred fifty-eight thousand, three hundred ninety-three".