993377816 has 16 divisors (see below), whose sum is σ = 1863888840. Its totient is φ = 496340800.

The previous prime is 993377753. The next prime is 993377831. The reversal of 993377816 is 618773399.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31181 + ... + 54396.

Almost surely, 2^993377816 is an apocalyptic number.

It is an amenable number.

993377816 is a deficient number, since it is larger than the sum of its proper divisors (870511024).

993377816 is a wasteful number, since it uses less digits than its factorization.

993377816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87034 (or 87030 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 53.

The square root of 993377816 is about 31517.8967572394. The cubic root of 993377816 is about 997.7877147364.

The spelling of 993377816 in words is "nine hundred ninety-three million, three hundred seventy-seven thousand, eight hundred sixteen".