2158389 has 12 divisors (see below), whose sum is σ = 3253536. Its totient is φ = 1376232.

The previous prime is 2158369. The next prime is 2158393. The reversal of 2158389 is 9838512.

It is not a de Polignac number, because 2158389 - 2⁵ = 2158357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5007 + ... + 5420.

It is an arithmetic number, because the mean of its divisors is an integer number (271128).

2^2158389 is an apocalyptic number.

It is an amenable number.

2158389 is a deficient number, since it is larger than the sum of its proper divisors (1095147).

2158389 is a wasteful number, since it uses less digits than its factorization.

2158389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10456 (or 10453 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2158389 is about 1469.1456701090. The cubic root of 2158389 is about 129.2339364249.

The spelling of 2158389 in words is "two million, one hundred fifty-eight thousand, three hundred eighty-nine".