1077977816 has 8 divisors (see below), whose sum is σ = 2021208420. Its totient is φ = 538988904.

The previous prime is 1077977809. The next prime is 1077977839. The reversal of 1077977816 is 6187797701.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67373606 + ... + 67373621.

Almost surely, 2^1077977816 is an apocalyptic number.

It is an amenable number.

1077977816 is a deficient number, since it is larger than the sum of its proper divisors (943230604).

1077977816 is a wasteful number, since it uses less digits than its factorization.

1077977816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134747233 (or 134747229 counting only the distinct ones).

The product of its (nonzero) digits is 1037232, while the sum is 53.

The square root of 1077977816 is about 32832.5724852623. The cubic root of 1077977816 is about 1025.3448186688.

The spelling of 1077977816 in words is "one billion, seventy-seven million, nine hundred seventy-seven thousand, eight hundred sixteen".