1320894478 has 16 divisors (see below), whose sum is σ = 2120976000. Its totient is φ = 615080952.

The previous prime is 1320894451. The next prime is 1320894527. The reversal of 1320894478 is 8744980231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292338 + ... + 296821.

It is an arithmetic number, because the mean of its divisors is an integer number (132561000).

Almost surely, 2^1320894478 is an apocalyptic number.

1320894478 is a deficient number, since it is larger than the sum of its proper divisors (800081522).

1320894478 is a wasteful number, since it uses less digits than its factorization.

1320894478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589239.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 1320894478 is about 36344.1120128144. The cubic root of 1320894478 is about 1097.2090342767.

The spelling of 1320894478 in words is "one billion, three hundred twenty million, eight hundred ninety-four thousand, four hundred seventy-eight".