3925818 has 48 divisors (see below), whose sum is σ = 9653280. Its totient is φ = 1143072.

The previous prime is 3925807. The next prime is 3925829. The reversal of 3925818 is 8185293.

It is an interprime number because it is at equal distance from previous prime (3925807) and next prime (3925829).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4005 + ... + 4887.

It is an arithmetic number, because the mean of its divisors is an integer number (201110).

Almost surely, 2^3925818 is an apocalyptic number.

3925818 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3925818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4826640).

3925818 is an abundant number, since it is smaller than the sum of its proper divisors (5727462).

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

3925818 is a wasteful number, since it uses less digits than its factorization.

3925818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923 (or 920 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 3925818 is about 1981.3677094371. The cubic root of 3925818 is about 157.7526707755.

The spelling of 3925818 in words is "three million, nine hundred twenty-five thousand, eight hundred eighteen".