1320923786 has 16 divisors (see below), whose sum is σ = 2438628864. Its totient is φ = 522563184.

The previous prime is 1320923777. The next prime is 1320923797. The reversal of 1320923786 is 6873290231.

It is an unprimeable number.

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, 3628730 + ... + 3629093.

It is an arithmetic number, because the mean of its divisors is an integer number (152414304).

Almost surely, 2^1320923786 is an apocalyptic number.

1320923786 is a deficient number, since it is larger than the sum of its proper divisors (1117705078).

1320923786 is a wasteful number, since it uses less digits than its factorization.

1320923786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7257845.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 1320923786 is about 36344.5152120647. The cubic root of 1320923786 is about 1097.2171491728.

The spelling of 1320923786 in words is "one billion, three hundred twenty million, nine hundred twenty-three thousand, seven hundred eighty-six".