3791816 has 48 divisors (see below), whose sum is σ = 8772300. Its totient is φ = 1526784.

The previous prime is 3791807. The next prime is 3791831. The reversal of 3791816 is 6181973.

It can be written as a sum of positive squares in 2 ways, for example, as 3786916 + 4900 = 1946^2 + 70^2 .

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 11 ways as a sum of consecutive naturals, for example, 6380 + ... + 6948.

Almost surely, 2^3791816 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 3791816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4386150).

3791816 is an abundant number, since it is smaller than the sum of its proper divisors (4980484).

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

3791816 is a wasteful number, since it uses less digits than its factorization.

3791816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606 (or 595 counting only the distinct ones).

The product of its digits is 9072, while the sum is 35.

The square root of 3791816 is about 1947.2585858072. The cubic root of 3791816 is about 155.9369677413.

The spelling of 3791816 in words is "three million, seven hundred ninety-one thousand, eight hundred sixteen".