1957913 has 2 divisors, whose sum is σ = 1957914. Its totient is φ = 1957912.

The previous prime is 1957909. The next prime is 1957937. The reversal of 1957913 is 3197591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1630729 + 327184 = 1277^2 + 572^2 .

It is an emirp because it is prime and its reverse (3197591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1957913 - 2² = 1957909 is a prime.

It is not a weakly prime, because it can be changed into another prime (1957903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978956 + 978957.

It is an arithmetic number, because the mean of its divisors is an integer number (978957).

2^1957913 is an apocalyptic number.

It is an amenable number.

1957913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1957913 is an equidigital number, since it uses as much as digits as its factorization.

1957913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8505, while the sum is 35.

The square root of 1957913 is about 1399.2544443381. The cubic root of 1957913 is about 125.1020606463.

The spelling of 1957913 in words is "one million, nine hundred fifty-seven thousand, nine hundred thirteen".