4591000091 has 8 divisors (see below), whose sum is σ = 4690882560. Its totient is φ = 4491209448.

The previous prime is 4591000061. The next prime is 4591000111. The reversal of 4591000091 is 1900001954.

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

It is a cyclic number.

It is not a de Polignac number, because 4591000091 - 2⁶ = 4591000027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4591000061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83420 + ... + 127046.

It is an arithmetic number, because the mean of its divisors is an integer number (586360320).

Almost surely, 2^4591000091 is an apocalyptic number.

4591000091 is a deficient number, since it is larger than the sum of its proper divisors (99882469).

4591000091 is a wasteful number, since it uses less digits than its factorization.

4591000091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45913.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 4591000091 is about 67756.9191374578. The cubic root of 4591000091 is about 1662.0181689663.

The spelling of 4591000091 in words is "four billion, five hundred ninety-one million, ninety-one", and thus it is an aban number.