2337981 has 4 divisors (see below), whose sum is σ = 3117312. Its totient is φ = 1558652.

The previous prime is 2337967. The next prime is 2337983. The reversal of 2337981 is 1897332.

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 2337981 - 2⁵ = 2337949 is a prime.

It is a super-2 number, since 2×2337981² = 10932310312722, which contains 22 as substring.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2337983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389661 + ... + 389666.

It is an arithmetic number, because the mean of its divisors is an integer number (779328).

2^2337981 is an apocalyptic number.

It is an amenable number.

2337981 is a deficient number, since it is larger than the sum of its proper divisors (779331).

2337981 is an equidigital number, since it uses as much as digits as its factorization.

2337981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779330.

The product of its digits is 9072, while the sum is 33.

The square root of 2337981 is about 1529.0457808712. The cubic root of 2337981 is about 132.7232453414.

The spelling of 2337981 in words is "two million, three hundred thirty-seven thousand, nine hundred eighty-one".