1320779794 has 16 divisors (see below), whose sum is σ = 2088636480. Its totient is φ = 624674160.

The previous prime is 1320779791. The next prime is 1320779849. The reversal of 1320779794 is 4979770231.

It is not an unprimeable number, because it can be changed into a prime (1320779791) 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, 1174 + ... + 51409.

It is an arithmetic number, because the mean of its divisors is an integer number (130539780).

Almost surely, 2^1320779794 is an apocalyptic number.

1320779794 is a deficient number, since it is larger than the sum of its proper divisors (767856686).

1320779794 is a wasteful number, since it uses less digits than its factorization.

1320779794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53265.

The product of its (nonzero) digits is 666792, while the sum is 49.

The square root of 1320779794 is about 36342.5342264405. The cubic root of 1320779794 is about 1097.1772790368.

The spelling of 1320779794 in words is "one billion, three hundred twenty million, seven hundred seventy-nine thousand, seven hundred ninety-four".