3815916 has 48 divisors (see below), whose sum is σ = 9770208. Its totient is φ = 1152000.

The previous prime is 3815909. The next prime is 3815923. The reversal of 3815916 is 6195183.

It is an interprime number because it is at equal distance from previous prime (3815909) and next prime (3815923).

It is a super-2 number, since 2×3815916² = 29122429838112, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9316 + ... + 9716.

It is an arithmetic number, because the mean of its divisors is an integer number (203546).

Almost surely, 2^3815916 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 3815916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4885104).

3815916 is an abundant number, since it is smaller than the sum of its proper divisors (5954292).

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

3815916 is a wasteful number, since it uses less digits than its factorization.

3815916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482 (or 480 counting only the distinct ones).

The product of its digits is 6480, while the sum is 33.

The square root of 3815916 is about 1953.4369710846. The cubic root of 3815916 is about 156.2666380149.

The spelling of 3815916 in words is "three million, eight hundred fifteen thousand, nine hundred sixteen".