780945802 has 16 divisors (see below), whose sum is σ = 1441746432. Its totient is φ = 308945520.

The previous prime is 780945773. The next prime is 780945817. The reversal of 780945802 is 208549087.

It is a super-2 number, since 2×780945802² = 1219752691322846408, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2145274 + ... + 2145637.

It is an arithmetic number, because the mean of its divisors is an integer number (90109152).

Almost surely, 2^780945802 is an apocalyptic number.

780945802 is a deficient number, since it is larger than the sum of its proper divisors (660800630).

780945802 is a wasteful number, since it uses less digits than its factorization.

780945802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290933.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 780945802 is about 27945.4075296819. The cubic root of 780945802 is about 920.8883204735. Note that the first 3 decimals are identical.

The spelling of 780945802 in words is "seven hundred eighty million, nine hundred forty-five thousand, eight hundred two".