3891118 has 24 divisors (see below), whose sum is σ = 7335216. Its totient is φ = 1515360.

The previous prime is 3891103. The next prime is 3891131. The reversal of 3891118 is 8111983.

It is a hoax number, since the sum of its digits (31) 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 3891118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546 + ... + 2842.

It is an arithmetic number, because the mean of its divisors is an integer number (305634).

Almost surely, 2^3891118 is an apocalyptic number.

3891118 is a deficient number, since it is larger than the sum of its proper divisors (3444098).

3891118 is a wasteful number, since it uses less digits than its factorization.

3891118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328 (or 2317 counting only the distinct ones).

The product of its digits is 1728, while the sum is 31.

The square root of 3891118 is about 1972.5916962210. The cubic root of 3891118 is about 157.2865067403.

The spelling of 3891118 in words is "three million, eight hundred ninety-one thousand, one hundred eighteen".