618767816 has 16 divisors (see below), whose sum is σ = 1174876800. Its totient is φ = 305467344.

The previous prime is 618767803. The next prime is 618767837.

618767816 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×618767816² = 765747220234819712, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

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 3 ways as a sum of consecutive naturals, for example, 488900 + ... + 490163.

It is an arithmetic number, because the mean of its divisors is an integer number (73429800).

Almost surely, 2^618767816 is an apocalyptic number.

It is an amenable number.

618767816 is a deficient number, since it is larger than the sum of its proper divisors (556108984).

618767816 is a wasteful number, since it uses less digits than its factorization.

618767816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979148 (or 979144 counting only the distinct ones).

The product of its digits is 677376, while the sum is 50.

The square root of 618767816 is about 24875.0440401620. The cubic root of 618767816 is about 852.1366389479.

The spelling of 618767816 in words is "six hundred eighteen million, seven hundred sixty-seven thousand, eight hundred sixteen".