1940013 has 12 divisors (see below), whose sum is σ = 2899260. Its totient is φ = 1248576.

The previous prime is 1939999. The next prime is 1940041. The reversal of 1940013 is 3100491.

It can be written as a sum of positive squares in 2 ways, for example, as 492804 + 1447209 = 702^2 + 1203^2 .

It is not a de Polignac number, because 1940013 - 2⁸ = 1939757 is a prime.

1940013 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3456 + ... + 3977.

It is an arithmetic number, because the mean of its divisors is an integer number (241605).

2^1940013 is an apocalyptic number.

It is an amenable number.

1940013 is a deficient number, since it is larger than the sum of its proper divisors (959247).

1940013 is a wasteful number, since it uses less digits than its factorization.

1940013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7468 (or 7465 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1940013 is about 1392.8434944386. The cubic root of 1940013 is about 124.7196490301.

The spelling of 1940013 in words is "one million, nine hundred forty thousand, thirteen".