4591221954 has 64 divisors (see below), whose sum is σ = 10358046720. Its totient is φ = 1344096000.

The previous prime is 4591221919. The next prime is 4591221961.

4591221954 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1469514 + ... + 1472634.

It is an arithmetic number, because the mean of its divisors is an integer number (161844480).

Almost surely, 2^4591221954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4591221954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5179023360).

4591221954 is an abundant number, since it is smaller than the sum of its proper divisors (5766824766).

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

4591221954 is a wasteful number, since it uses less digits than its factorization.

4591221954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887.

The product of its digits is 129600, while the sum is 42.

The square root of 4591221954 is about 67758.5563157894. The cubic root of 4591221954 is about 1662.0449412301.

The spelling of 4591221954 in words is "four billion, five hundred ninety-one million, two hundred twenty-one thousand, nine hundred fifty-four".