1078777864 has 16 divisors (see below), whose sum is σ = 2048313600. Its totient is φ = 532560912.

The previous prime is 1078777853. The next prime is 1078777933. The reversal of 1078777864 is 4687778701.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852832 + ... + 854095.

It is an arithmetic number, because the mean of its divisors is an integer number (128019600).

Almost surely, 2^1078777864 is an apocalyptic number.

It is an amenable number.

1078777864 is a deficient number, since it is larger than the sum of its proper divisors (969535736).

1078777864 is a wasteful number, since it uses less digits than its factorization.

1078777864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707012 (or 1707008 counting only the distinct ones).

The product of its (nonzero) digits is 3687936, while the sum is 55.

The square root of 1078777864 is about 32844.7539798976. The cubic root of 1078777864 is about 1025.5984176457.

The spelling of 1078777864 in words is "one billion, seventy-eight million, seven hundred seventy-seven thousand, eight hundred sixty-four".