3918500 has 48 divisors (see below), whose sum is σ = 9081072. Its totient is φ = 1472000.

The previous prime is 3918491. The next prime is 3918511. The reversal of 3918500 is 58193.

It can be written as a sum of positive squares in 8 ways, for example, as 1069156 + 2849344 = 1034^2 + 1688^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3918500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8270 + ... + 8730.

It is an arithmetic number, because the mean of its divisors is an integer number (189189).

Almost surely, 2^3918500 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 3918500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4540536).

3918500 is an abundant number, since it is smaller than the sum of its proper divisors (5162572).

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

3918500 is a wasteful number, since it uses less digits than its factorization.

3918500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 3918500 is about 1979.5201438733. The cubic root of 3918500 is about 157.6545891270.

The spelling of 3918500 in words is "three million, nine hundred eighteen thousand, five hundred".