2158013 has 8 divisors (see below), whose sum is σ = 2535456. Its totient is φ = 1810800.

The previous prime is 2157989. The next prime is 2158019. The reversal of 2158013 is 3108512.

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 2158013 - 2¹⁸ = 1895869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158019) 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 in 7 ways as a sum of consecutive naturals, for example, 7403 + ... + 7688.

It is an arithmetic number, because the mean of its divisors is an integer number (316932).

2^2158013 is an apocalyptic number.

It is an amenable number.

2158013 is a deficient number, since it is larger than the sum of its proper divisors (377443).

2158013 is a wasteful number, since it uses less digits than its factorization.

2158013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15115.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2158013 is about 1469.0176990084. The cubic root of 2158013 is about 129.2264316328.

It can be divided in two parts, 215 and 8013, that added together give a palindrome (8228).

The spelling of 2158013 in words is "two million, one hundred fifty-eight thousand, thirteen".