1957403 has 12 divisors (see below), whose sum is σ = 2332440. Its totient is φ = 1636992.

The previous prime is 1957391. The next prime is 1957441. The reversal of 1957403 is 3047591.

It is not a de Polignac number, because 1957403 - 2⁸ = 1957147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1957453) 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, 1643 + ... + 2571.

It is an arithmetic number, because the mean of its divisors is an integer number (194370).

2^1957403 is an apocalyptic number.

1957403 is a deficient number, since it is larger than the sum of its proper divisors (375037).

1957403 is an equidigital number, since it uses as much as digits as its factorization.

1957403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986 (or 979 counting only the distinct ones).

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

The square root of 1957403 is about 1399.0721925619. The cubic root of 1957403 is about 125.0911974480.

The spelling of 1957403 in words is "one million, nine hundred fifty-seven thousand, four hundred three".