1940357 has 4 divisors (see below), whose sum is σ = 1946796. Its totient is φ = 1933920.

The previous prime is 1940339. The next prime is 1940371. The reversal of 1940357 is 7530491.

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

It can be written as a sum of positive squares in 2 ways, for example, as 160801 + 1779556 = 401^2 + 1334^2 .

It is a cyclic number.

It is not a de Polignac number, because 1940357 - 2⁶ = 1940293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940327) 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, 2744 + ... + 3377.

It is an arithmetic number, because the mean of its divisors is an integer number (486699).

2^1940357 is an apocalyptic number.

It is an amenable number.

1940357 is a deficient number, since it is larger than the sum of its proper divisors (6439).

1940357 is an equidigital number, since it uses as much as digits as its factorization.

1940357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6438.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1940357 is about 1392.9669773545. The cubic root of 1940357 is about 124.7270202906.

The spelling of 1940357 in words is "one million, nine hundred forty thousand, three hundred fifty-seven".