1320845766 has 16 divisors (see below), whose sum is σ = 2643852288. Its totient is φ = 439921800.

The previous prime is 1320845761. The next prime is 1320845767. The reversal of 1320845766 is 6675480231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320845761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82030 + ... + 96801.

It is an arithmetic number, because the mean of its divisors is an integer number (165240768).

Almost surely, 2^1320845766 is an apocalyptic number.

1320845766 is an abundant number, since it is smaller than the sum of its proper divisors (1323006522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320845766 is a wasteful number, since it uses less digits than its factorization.

1320845766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180067.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 1320845766 is about 36343.4418568192. The cubic root of 1320845766 is about 1097.1955464711.

The spelling of 1320845766 in words is "one billion, three hundred twenty million, eight hundred forty-five thousand, seven hundred sixty-six".