2813993 has 24 divisors (see below), whose sum is σ = 3713472. Its totient is φ = 2075904.

The previous prime is 2813989. The next prime is 2814001. The reversal of 2813993 is 3993182.

It is not a de Polignac number, because 2813993 - 2² = 2813989 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

Its product of digits (11664) is a multiple of the sum of its prime divisors (144).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2813903) 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, 26246 + ... + 26352.

It is an arithmetic number, because the mean of its divisors is an integer number (154728).

2^2813993 is an apocalyptic number.

It is an amenable number.

2813993 is a deficient number, since it is larger than the sum of its proper divisors (899479).

2813993 is a wasteful number, since it uses less digits than its factorization.

2813993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 144 counting only the distinct ones).

The product of its digits is 11664, while the sum is 35.

The square root of 2813993 is about 1677.4960506660. The cubic root of 2813993 is about 141.1803771012.

The spelling of 2813993 in words is "two million, eight hundred thirteen thousand, nine hundred ninety-three".