1940313 has 4 divisors (see below), whose sum is σ = 2587088. Its totient is φ = 1293540.

The previous prime is 1940293. The next prime is 1940327. The reversal of 1940313 is 3130491.

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 not a de Polignac number, because 1940313 - 2⁹ = 1939801 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1940313.

It is not an unprimeable number, because it can be changed into a prime (1940713) 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, 323383 + ... + 323388.

It is an arithmetic number, because the mean of its divisors is an integer number (646772).

2^1940313 is an apocalyptic number.

It is an amenable number.

1940313 is a deficient number, since it is larger than the sum of its proper divisors (646775).

1940313 is an equidigital number, since it uses as much as digits as its factorization.

1940313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646774.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 1940313 is about 1392.9511836385. The cubic root of 1940313 is about 124.7260775035.

The spelling of 1940313 in words is "one million, nine hundred forty thousand, three hundred thirteen".