2953813 has 4 divisors (see below), whose sum is σ = 2995488. Its totient is φ = 2912140.

The previous prime is 2953807. The next prime is 2953817. The reversal of 2953813 is 3183592.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2953813 - 2¹⁷ = 2822741 is a prime.

It is a super-2 number, since 2×2953813² = 17450022477938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2953817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20731 + ... + 20872.

It is an arithmetic number, because the mean of its divisors is an integer number (748872).

2^2953813 is an apocalyptic number.

It is an amenable number.

2953813 is a deficient number, since it is larger than the sum of its proper divisors (41675).

2953813 is an equidigital number, since it uses as much as digits as its factorization.

2953813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41674.

The product of its digits is 6480, while the sum is 31.

The square root of 2953813 is about 1718.6660524954. Note that the first 3 decimals coincide. The cubic root of 2953813 is about 143.4809794018.

The spelling of 2953813 in words is "two million, nine hundred fifty-three thousand, eight hundred thirteen".