1066019868 has 18 divisors (see below), whose sum is σ = 2694661424. Its totient is φ = 355339944.

The previous prime is 1066019863. The next prime is 1066019869. The reversal of 1066019868 is 8689106601.

It is a happy number.

1066019868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1066019868² = 2272796717941474848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066019861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14805796 + ... + 14805867.

Almost surely, 2^1066019868 is an apocalyptic number.

1066019868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1066019868 is an abundant number, since it is smaller than the sum of its proper divisors (1628641556).

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

1066019868 is a wasteful number, since it uses less digits than its factorization.

1066019868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29611673 (or 29611668 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1066019868 is about 32649.9596936964. The cubic root of 1066019868 is about 1021.5393481349.

The spelling of 1066019868 in words is "one billion, sixty-six million, nineteen thousand, eight hundred sixty-eight".