2891918796 has 48 divisors (see below), whose sum is σ = 7322396928. Its totient is φ = 883022400.

The previous prime is 2891918791. The next prime is 2891918801. The reversal of 2891918796 is 6978191982.

It is an interprime number because it is at equal distance from previous prime (2891918791) and next prime (2891918801).

It is not an unprimeable number, because it can be changed into a prime (2891918791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50320 + ... + 91191.

It is an arithmetic number, because the mean of its divisors is an integer number (152549936).

Almost surely, 2^2891918796 is an apocalyptic number.

2891918796 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2891918796 is an abundant number, since it is smaller than the sum of its proper divisors (4430478132).

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

2891918796 is a wasteful number, since it uses less digits than its factorization.

2891918796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141662 (or 141660 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 60.

The square root of 2891918796 is about 53776.5636313813. The cubic root of 2891918796 is about 1424.7173003991.

The spelling of 2891918796 in words is "two billion, eight hundred ninety-one million, nine hundred eighteen thousand, seven hundred ninety-six".