1940913 has 24 divisors (see below), whose sum is σ = 3085992. Its totient is φ = 1168128.

The previous prime is 1940903. The next prime is 1940929. The reversal of 1940913 is 3190491.

It can be written as a sum of positive squares in 4 ways, for example, as 3249 + 1937664 = 57^2 + 1392^2 .

It is not a de Polignac number, because 1940913 - 2⁵ = 1940881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1940903) 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 23 ways as a sum of consecutive naturals, for example, 6045 + ... + 6357.

It is an arithmetic number, because the mean of its divisors is an integer number (128583).

2^1940913 is an apocalyptic number.

1940913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1940913 is a deficient number, since it is larger than the sum of its proper divisors (1145079).

1940913 is a wasteful number, since it uses less digits than its factorization.

1940913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1940913 is about 1393.1665370658. The cubic root of 1940913 is about 124.7389324629.

The spelling of 1940913 in words is "one million, nine hundred forty thousand, nine hundred thirteen".