1957090 has 8 divisors (see below), whose sum is σ = 3522780. Its totient is φ = 782832.

The previous prime is 1957079. The next prime is 1957097. The reversal of 1957090 is 907591.

It can be written as a sum of positive squares in 2 ways, for example, as 1940449 + 16641 = 1393^2 + 129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1957097) 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, 97845 + ... + 97864.

2^1957090 is an apocalyptic number.

1957090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1957090 is a deficient number, since it is larger than the sum of its proper divisors (1565690).

1957090 is a wasteful number, since it uses less digits than its factorization.

1957090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195716.

The product of its (nonzero) digits is 2835, while the sum is 31.

The square root of 1957090 is about 1398.9603282438. The cubic root of 1957090 is about 125.0845294919.

The spelling of 1957090 in words is "one million, nine hundred fifty-seven thousand, ninety".