1957313 has 4 divisors (see below), whose sum is σ = 1975380. Its totient is φ = 1939248.

The previous prime is 1957303. The next prime is 1957321. The reversal of 1957313 is 3137591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3137591 = 23 ⋅136417.

It can be written as a sum of positive squares in 2 ways, for example, as 1787569 + 169744 = 1337^2 + 412^2 .

It is a cyclic number.

It is not a de Polignac number, because 1957313 - 2¹⁰ = 1956289 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 (1957303) 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, 8870 + ... + 9087.

It is an arithmetic number, because the mean of its divisors is an integer number (493845).

2^1957313 is an apocalyptic number.

It is an amenable number.

1957313 is a deficient number, since it is larger than the sum of its proper divisors (18067).

1957313 is a wasteful number, since it uses less digits than its factorization.

1957313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18066.

The product of its digits is 2835, while the sum is 29.

The square root of 1957313 is about 1399.0400280192. The cubic root of 1957313 is about 125.0892802172.

The spelling of 1957313 in words is "one million, nine hundred fifty-seven thousand, three hundred thirteen".