1326750397 has 8 divisors (see below), whose sum is σ = 1605479616. Its totient is φ = 1070319552.

The previous prime is 1326750391. The next prime is 1326750401. The reversal of 1326750397 is 7930576231.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1326750397 - 2³ = 1326750389 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 (1326750391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5574463 + ... + 5574700.

It is an arithmetic number, because the mean of its divisors is an integer number (200684952).

Almost surely, 2^1326750397 is an apocalyptic number.

1326750397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1326750397 is a deficient number, since it is larger than the sum of its proper divisors (278729219).

1326750397 is a wasteful number, since it uses less digits than its factorization.

1326750397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11149187.

The product of its (nonzero) digits is 238140, while the sum is 43.

The square root of 1326750397 is about 36424.5850628391. The cubic root of 1326750397 is about 1098.8280623318.

The spelling of 1326750397 in words is "one billion, three hundred twenty-six million, seven hundred fifty thousand, three hundred ninety-seven".