4091049018 has 40 divisors (see below), whose sum is σ = 10476551712. Its totient is φ = 1168870824.

The previous prime is 4091048999. The next prime is 4091049019. The reversal of 4091049018 is 8109401904.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4091049019) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1802680 + ... + 1804947.

Almost surely, 2^4091049018 is an apocalyptic number.

4091049018 is an abundant number, since it is smaller than the sum of its proper divisors (6385502694).

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

4091049018 is a wasteful number, since it uses less digits than its factorization.

4091049018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607648 (or 3607639 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 4091049018 is about 63961.3087577170. The cubic root of 4091049018 is about 1599.3550809700.

The spelling of 4091049018 in words is "four billion, ninety-one million, forty-nine thousand, eighteen".