3816891140 has 48 divisors (see below), whose sum is σ = 8344992432. Its totient is φ = 1465122816.

The previous prime is 3816891107. The next prime is 3816891167. The reversal of 3816891140 is 411986183.

It can be written as a sum of positive squares in 8 ways, for example, as 771617284 + 3045273856 = 27778^2 + 55184^2 .

It is a super-2 number, since 2×3816891140² = 29137315949220999200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18692 + ... + 89348.

It is an arithmetic number, because the mean of its divisors is an integer number (173854009).

Almost surely, 2^3816891140 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 3816891140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4172496216).

3816891140 is an abundant number, since it is smaller than the sum of its proper divisors (4528101292).

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

3816891140 is a wasteful number, since it uses less digits than its factorization.

3816891140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70776 (or 70774 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 3816891140 is about 61780.9933555620. The cubic root of 3816891140 is about 1562.7994795773.

The spelling of 3816891140 in words is "three billion, eight hundred sixteen million, eight hundred ninety-one thousand, one hundred forty".