13195957 has 4 divisors (see below), whose sum is σ = 13651020. Its totient is φ = 12740896.

The previous prime is 13195913. The next prime is 13195967. The reversal of 13195957 is 75959131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75959131 = 19 ⋅3997849.

It can be written as a sum of positive squares in 2 ways, for example, as 8491396 + 4704561 = 2914^2 + 2169^2 .

It is a cyclic number.

It is not a de Polignac number, because 13195957 - 2⁷ = 13195829 is a prime.

It is a super-2 number, since 2×13195957² = 348266562291698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13195967) 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, 227488 + ... + 227545.

It is an arithmetic number, because the mean of its divisors is an integer number (3412755).

Almost surely, 2^13195957 is an apocalyptic number.

It is an amenable number.

13195957 is a deficient number, since it is larger than the sum of its proper divisors (455063).

13195957 is an equidigital number, since it uses as much as digits as its factorization.

13195957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455062.

The product of its digits is 42525, while the sum is 40.

The square root of 13195957 is about 3632.6239827431. The cubic root of 13195957 is about 236.3090189699.

The spelling of 13195957 in words is "thirteen million, one hundred ninety-five thousand, nine hundred fifty-seven".