1320891333 has 16 divisors (see below), whose sum is σ = 1823001600. Its totient is φ = 849723840.

The previous prime is 1320891323. The next prime is 1320891349. The reversal of 1320891333 is 3331980231.

It is not a de Polignac number, because 1320891333 - 2⁶ = 1320891269 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320891294 and 1320891303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320891323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191403 + ... + 198183.

It is an arithmetic number, because the mean of its divisors is an integer number (113937600).

Almost surely, 2^1320891333 is an apocalyptic number.

It is an amenable number.

1320891333 is a deficient number, since it is larger than the sum of its proper divisors (502110267).

1320891333 is a wasteful number, since it uses less digits than its factorization.

1320891333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9052.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 1320891333 is about 36344.0687458078. The cubic root of 1320891333 is about 1097.2081634715.

The spelling of 1320891333 in words is "one billion, three hundred twenty million, eight hundred ninety-one thousand, three hundred thirty-three".