1326394507 has 4 divisors (see below), whose sum is σ = 1326507336. Its totient is φ = 1326281680.

The previous prime is 1326394453. The next prime is 1326394543. The reversal of 1326394507 is 7054936231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7054936231 = 7 ⋅1007848033.

It is a cyclic number.

It is not a de Polignac number, because 1326394507 - 2¹⁵ = 1326361739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1326394507.

It is not an unprimeable number, because it can be changed into a prime (1326397507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36418 + ... + 63079.

It is an arithmetic number, because the mean of its divisors is an integer number (331626834).

Almost surely, 2^1326394507 is an apocalyptic number.

1326394507 is a deficient number, since it is larger than the sum of its proper divisors (112829).

1326394507 is an equidigital number, since it uses as much as digits as its factorization.

1326394507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112828.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 1326394507 is about 36419.6994358822. The cubic root of 1326394507 is about 1098.7298029829.

The spelling of 1326394507 in words is "one billion, three hundred twenty-six million, three hundred ninety-four thousand, five hundred seven".