3918522 has 32 divisors (see below), whose sum is σ = 8481600. Its totient is φ = 1202688.

The previous prime is 3918511. The next prime is 3918529. The reversal of 3918522 is 2258193.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3918522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3918529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3754 + ... + 4682.

It is an arithmetic number, because the mean of its divisors is an integer number (265050).

Almost surely, 2^3918522 is an apocalyptic number.

3918522 is an abundant number, since it is smaller than the sum of its proper divisors (4563078).

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

3918522 is a wasteful number, since it uses less digits than its factorization.

3918522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990.

The product of its digits is 4320, while the sum is 30.

The square root of 3918522 is about 1979.5257007677. The cubic root of 3918522 is about 157.6548841714.

The spelling of 3918522 in words is "three million, nine hundred eighteen thousand, five hundred twenty-two".