1029983868 has 18 divisors (see below), whose sum is σ = 2603570424. Its totient is φ = 343327944.

The previous prime is 1029983839. The next prime is 1029983869. The reversal of 1029983868 is 8683899201.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1029983869) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 14305296 + ... + 14305367.

Almost surely, 2^1029983868 is an apocalyptic number.

1029983868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1029983868 is an abundant number, since it is smaller than the sum of its proper divisors (1573586556).

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

1029983868 is a wasteful number, since it uses less digits than its factorization.

1029983868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28610673 (or 28610668 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 1029983868 is about 32093.3617435133. The cubic root of 1029983868 is about 1009.8963616169.

The spelling of 1029983868 in words is "one billion, twenty-nine million, nine hundred eighty-three thousand, eight hundred sixty-eight".