3919818 has 16 divisors (see below), whose sum is σ = 8959680. Its totient is φ = 1119936.

The previous prime is 3919813. The next prime is 3919823. The reversal of 3919818 is 8189193.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3919813) and next prime (3919823).

It is not an unprimeable number, because it can be changed into a prime (3919813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46623 + ... + 46706.

It is an arithmetic number, because the mean of its divisors is an integer number (559980).

Almost surely, 2^3919818 is an apocalyptic number.

3919818 is an abundant number, since it is smaller than the sum of its proper divisors (5039862).

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

3919818 is a wasteful number, since it uses less digits than its factorization.

3919818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93341.

The product of its digits is 15552, while the sum is 39.

The square root of 3919818 is about 1979.8530248481. The cubic root of 3919818 is about 157.6722630206.

The spelling of 3919818 in words is "three million, nine hundred nineteen thousand, eight hundred eighteen".