2158473 has 8 divisors (see below), whose sum is σ = 3047328. Its totient is φ = 1354304.

The previous prime is 2158459. The next prime is 2158477. The reversal of 2158473 is 3748512.

2158473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2158473 - 2¹⁷ = 2027401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2158473.

It is not an unprimeable number, because it can be changed into a prime (2158477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21111 + ... + 21212.

It is an arithmetic number, because the mean of its divisors is an integer number (380916).

2^2158473 is an apocalyptic number.

It is an amenable number.

2158473 is a deficient number, since it is larger than the sum of its proper divisors (888855).

2158473 is a wasteful number, since it uses less digits than its factorization.

2158473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42343.

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

The square root of 2158473 is about 1469.1742578741. The cubic root of 2158473 is about 129.2356129082.

The spelling of 2158473 in words is "two million, one hundred fifty-eight thousand, four hundred seventy-three".