1326326257 has 6 divisors (see below), whose sum is σ = 1386500402. Its totient is φ = 1268659392.

The previous prime is 1326326251. The next prime is 1326326263. The reversal of 1326326257 is 7526236231.

It is an interprime number because it is at equal distance from previous prime (1326326251) and next prime (1326326263).

It can be written as a sum of positive squares in only one way, i.e., 855913536 + 470412721 = 29256^2 + 21689^2 .

It is not a de Polignac number, because 1326326257 - 2³ = 1326326249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326326251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1253088 + ... + 1254145.

Almost surely, 2^1326326257 is an apocalyptic number.

It is an amenable number.

1326326257 is a deficient number, since it is larger than the sum of its proper divisors (60174145).

1326326257 is an equidigital number, since it uses as much as digits as its factorization.

1326326257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2507279 (or 2507256 counting only the distinct ones).

The product of its digits is 90720, while the sum is 37.

The square root of 1326326257 is about 36418.7624309229. The cubic root of 1326326257 is about 1098.7109575100.

The spelling of 1326326257 in words is "one billion, three hundred twenty-six million, three hundred twenty-six thousand, two hundred fifty-seven".