2801983 has 4 divisors (see below), whose sum is σ = 2812168. Its totient is φ = 2791800.

The previous prime is 2801977. The next prime is 2802011. The reversal of 2801983 is 3891082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2801983 is a prime.

It is a super-2 number, since 2×2801983² = 15702217464578, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2801483) 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, 4668 + ... + 5233.

It is an arithmetic number, because the mean of its divisors is an integer number (703042).

2^2801983 is an apocalyptic number.

2801983 is a deficient number, since it is larger than the sum of its proper divisors (10185).

2801983 is an equidigital number, since it uses as much as digits as its factorization.

2801983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10184.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 2801983 is about 1673.9124827780. The cubic root of 2801983 is about 140.9792401071.

The spelling of 2801983 in words is "two million, eight hundred one thousand, nine hundred eighty-three".