1326404645 has 8 divisors (see below), whose sum is σ = 1607139456. Its totient is φ = 1050821136.

The previous prime is 1326404623. The next prime is 1326404663. The reversal of 1326404645 is 5464046231.

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 1326404645 - 2¹² = 1326400549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1287257 + ... + 1288286.

It is an arithmetic number, because the mean of its divisors is an integer number (200892432).

Almost surely, 2^1326404645 is an apocalyptic number.

It is an amenable number.

1326404645 is a deficient number, since it is larger than the sum of its proper divisors (280734811).

1326404645 is a wasteful number, since it uses less digits than its factorization.

1326404645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575651.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 1326404645 is about 36419.8386185332. The cubic root of 1326404645 is about 1098.7326022743.

The spelling of 1326404645 in words is "one billion, three hundred twenty-six million, four hundred four thousand, six hundred forty-five".