3921018 has 8 divisors (see below), whose sum is σ = 7842048. Its totient is φ = 1307004.

The previous prime is 3920989. The next prime is 3921023. The reversal of 3921018 is 8101293.

It is a sphenic number, since it is the product of 3 distinct primes.

3921018 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326746 + ... + 326757.

It is an arithmetic number, because the mean of its divisors is an integer number (980256).

Almost surely, 2^3921018 is an apocalyptic number.

3921018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3921018 is a wasteful number, since it uses less digits than its factorization.

3921018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653508.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 3921018 is about 1980.1560544563. The cubic root of 3921018 is about 157.6883511324.

The spelling of 3921018 in words is "three million, nine hundred twenty-one thousand, eighteen".