1001863896 has 128 divisors (see below), whose sum is σ = 2805580800. Its totient is φ = 295568000.

The previous prime is 1001863883. The next prime is 1001863903. The reversal of 1001863896 is 6983681001.

It is a super-2 number, since 2×1001863896² = 2007462532216597632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2040211 + ... + 2040701.

It is an arithmetic number, because the mean of its divisors is an integer number (21918600).

Almost surely, 2^1001863896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001863896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1402790400).

1001863896 is an abundant number, since it is smaller than the sum of its proper divisors (1803716904).

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

1001863896 is a wasteful number, since it uses less digits than its factorization.

1001863896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 697 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1001863896 is about 31652.2336652565. The cubic root of 1001863896 is about 1000.6209130539.

The spelling of 1001863896 in words is "one billion, one million, eight hundred sixty-three thousand, eight hundred ninety-six".