1017996820 has 48 divisors (see below), whose sum is σ = 2253404160. Its totient is φ = 385236864.

The previous prime is 1017996803. The next prime is 1017996841. The reversal of 1017996820 is 286997101.

1017996820 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 2×1017996820² = 2072635051060224800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377517 + ... + 380203.

It is an arithmetic number, because the mean of its divisors is an integer number (46945920).

Almost surely, 2^1017996820 is an apocalyptic number.

1017996820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1017996820 is an abundant number, since it is smaller than the sum of its proper divisors (1235407340).

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

1017996820 is a wasteful number, since it uses less digits than its factorization.

1017996820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712 (or 3710 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 1017996820 is about 31906.0624333370. The cubic root of 1017996820 is about 1005.9633082673.

The spelling of 1017996820 in words is "one billion, seventeen million, nine hundred ninety-six thousand, eight hundred twenty".