1320847478 has 16 divisors (see below), whose sum is σ = 1991658240. Its totient is φ = 656970600.

The previous prime is 1320847477. The next prime is 1320847481. The reversal of 1320847478 is 8747480231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320847477) 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, 353303 + ... + 357021.

It is an arithmetic number, because the mean of its divisors is an integer number (124478640).

Almost surely, 2^1320847478 is an apocalyptic number.

1320847478 is a deficient number, since it is larger than the sum of its proper divisors (670810762).

1320847478 is a wasteful number, since it uses less digits than its factorization.

1320847478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4603.

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 1320847478 is about 36343.4654098918. The cubic root of 1320847478 is about 1097.1960205103.

The spelling of 1320847478 in words is "one billion, three hundred twenty million, eight hundred forty-seven thousand, four hundred seventy-eight".