4991881994 has 8 divisors (see below), whose sum is σ = 8168534208. Its totient is φ = 2269037260.

The previous prime is 4991881963. The next prime is 4991882017.

4991881994 is nontrivially palindromic in base 10.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113451842 + ... + 113451885.

It is an arithmetic number, because the mean of its divisors is an integer number (1021066776).

Almost surely, 2^4991881994 is an apocalyptic number.

4991881994 is a deficient number, since it is larger than the sum of its proper divisors (3176652214).

4991881994 is a wasteful number, since it uses less digits than its factorization.

4991881994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226903740.

The product of its digits is 6718464, while the sum is 62.

The square root of 4991881994 is about 70653.2518289144. The cubic root of 4991881994 is about 1709.0500057098.

The spelling of 4991881994 in words is "four billion, nine hundred ninety-one million, eight hundred eighty-one thousand, nine hundred ninety-four".