2158743 has 8 divisors (see below), whose sum is σ = 2932848. Its totient is φ = 1411904.

The previous prime is 2158733. The next prime is 2158753. The reversal of 2158743 is 3478512.

It is an interprime number because it is at equal distance from previous prime (2158733) and next prime (2158753).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2158743 - 2⁴ = 2158727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2158743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6630 + ... + 6947.

It is an arithmetic number, because the mean of its divisors is an integer number (366606).

2^2158743 is an apocalyptic number.

2158743 is a deficient number, since it is larger than the sum of its proper divisors (774105).

2158743 is a wasteful number, since it uses less digits than its factorization.

2158743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13633.

The product of its digits is 6720, while the sum is 30.

The square root of 2158743 is about 1469.2661433518. The cubic root of 2158743 is about 129.2410013102.

The spelling of 2158743 in words is "two million, one hundred fifty-eight thousand, seven hundred forty-three".