2158983 has 24 divisors (see below), whose sum is σ = 3358368. Its totient is φ = 1331712.

The previous prime is 2158979. The next prime is 2158993. The reversal of 2158983 is 3898512.

It is not a de Polignac number, because 2158983 - 2² = 2158979 is a prime.

It is a super-2 number, since 2×2158983² = 9322415188578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15691 + ... + 15827.

It is an arithmetic number, because the mean of its divisors is an integer number (139932).

2^2158983 is an apocalyptic number.

2158983 is a deficient number, since it is larger than the sum of its proper divisors (1199385).

2158983 is a wasteful number, since it uses less digits than its factorization.

2158983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 260 counting only the distinct ones).

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

The square root of 2158983 is about 1469.3478145082. The cubic root of 2158983 is about 129.2457906237.

The spelling of 2158983 in words is "two million, one hundred fifty-eight thousand, nine hundred eighty-three".