2158803 has 12 divisors (see below), whose sum is σ = 3254160. Its totient is φ = 1376496.

The previous prime is 2158801. The next prime is 2158811. The reversal of 2158803 is 3088512.

It is a happy number.

It is not a de Polignac number, because 2158803 - 2¹ = 2158801 is a prime.

It is a super-3 number, since 3×2158803³ = 30182853339861742881, which contains 333 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2158801) 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, 5008 + ... + 5421.

It is an arithmetic number, because the mean of its divisors is an integer number (271180).

2^2158803 is an apocalyptic number.

2158803 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2158803 is a deficient number, since it is larger than the sum of its proper divisors (1095357).

2158803 is a wasteful number, since it uses less digits than its factorization.

2158803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10458 (or 10455 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2158803 is about 1469.2865615665. The cubic root of 2158803 is about 129.2421986719.

The spelling of 2158803 in words is "two million, one hundred fifty-eight thousand, eight hundred three".