4161918 has 16 divisors (see below), whose sum is σ = 8352000. Its totient is φ = 1382616.

The previous prime is 4161881. The next prime is 4161943. The reversal of 4161918 is 8191614.

It is a super-2 number, since 2×4161918² = 34643122877448, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1083 + ... + 3081.

It is an arithmetic number, because the mean of its divisors is an integer number (522000).

Almost surely, 2^4161918 is an apocalyptic number.

4161918 is an abundant number, since it is smaller than the sum of its proper divisors (4190082).

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

4161918 is a wasteful number, since it uses less digits than its factorization.

4161918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351.

The product of its digits is 1728, while the sum is 30.

The square root of 4161918 is about 2040.0779396876. The cubic root of 4161918 is about 160.8537436997.

The spelling of 4161918 in words is "four million, one hundred sixty-one thousand, nine hundred eighteen".