1000551816 has 48 divisors (see below), whose sum is σ = 2956178160. Its totient is φ = 303197280.

The previous prime is 1000551749. The next prime is 1000551857. The reversal of 1000551816 is 6181550001.

1000551816 is a `hidden beast` number, since 100 + 0 + 551 + 8 + 1 + 6 = 666.

1000551816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1000551816² = 2002207873001795712, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1000551816.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 630870 + ... + 632453.

It is an arithmetic number, because the mean of its divisors is an integer number (61587045).

Almost surely, 2^1000551816 is an apocalyptic number.

It is an amenable number.

1000551816 is an abundant number, since it is smaller than the sum of its proper divisors (1955626344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000551816 is a wasteful number, since it uses less digits than its factorization.

1000551816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263346 (or 1263339 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 1000551816 is about 31631.5003754169. The cubic root of 1000551816 is about 1000.1839048436.

The spelling of 1000551816 in words is "one billion, five hundred fifty-one thousand, eight hundred sixteen".