3821518 has 4 divisors (see below), whose sum is σ = 5732280. Its totient is φ = 1910758.

The previous prime is 3821513. The next prime is 3821563. The reversal of 3821518 is 8151283.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3821513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 955378 + ... + 955381.

It is an arithmetic number, because the mean of its divisors is an integer number (1433070).

Almost surely, 2^3821518 is an apocalyptic number.

3821518 is a deficient number, since it is larger than the sum of its proper divisors (1910762).

3821518 is a wasteful number, since it uses less digits than its factorization.

3821518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910761.

The product of its digits is 1920, while the sum is 28.

The square root of 3821518 is about 1954.8703281804. The cubic root of 3821518 is about 156.3430703117.

The spelling of 3821518 in words is "three million, eight hundred twenty-one thousand, five hundred eighteen".