1320778033 has 8 divisors (see below), whose sum is σ = 1364532480. Its totient is φ = 1277095440.

The previous prime is 1320778009. The next prime is 1320778049. The reversal of 1320778033 is 3308770231.

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 1320778033 - 2¹⁷ = 1320646961 is a prime.

It is a super-2 number, since 2×1320778033² = 3488909224910698178, which contains 22 as substring.

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 1320778033.

It is not an unprimeable number, because it can be changed into a prime (1320778133) 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, 20766 + ... + 55432.

It is an arithmetic number, because the mean of its divisors is an integer number (170566560).

Almost surely, 2^1320778033 is an apocalyptic number.

It is an amenable number.

1320778033 is a deficient number, since it is larger than the sum of its proper divisors (43754447).

1320778033 is a wasteful number, since it uses less digits than its factorization.

1320778033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35927.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 1320778033 is about 36342.5099986228. The cubic root of 1320778033 is about 1097.1767914133.

The spelling of 1320778033 in words is "one billion, three hundred twenty million, seven hundred seventy-eight thousand, thirty-three".