2981661892 has 48 divisors (see below), whose sum is σ = 6037077312. Its totient is φ = 1273466880.

The previous prime is 2981661853. The next prime is 2981661899.

2981661892 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (2981661899) 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, 500443 + ... + 506365.

It is an arithmetic number, because the mean of its divisors is an integer number (125772444).

Almost surely, 2^2981661892 is an apocalyptic number.

2981661892 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2981661892 is an abundant number, since it is smaller than the sum of its proper divisors (3055415420).

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

2981661892 is a wasteful number, since it uses less digits than its factorization.

2981661892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6628 (or 6626 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The square root of 2981661892 is about 54604.5958871595. The cubic root of 2981661892 is about 1439.3048811977.

The spelling of 2981661892 in words is "two billion, nine hundred eighty-one million, six hundred sixty-one thousand, eight hundred ninety-two".