2981991892 has 48 divisors (see below), whose sum is σ = 5893961472. Its totient is φ = 1308372480.

The previous prime is 2981991889. The next prime is 2981991899.

2981991892 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2981991899) 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, 141088 + ... + 160840.

It is an arithmetic number, because the mean of its divisors is an integer number (122790864).

Almost surely, 2^2981991892 is an apocalyptic number.

2981991892 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2981991892 is a deficient number, since it is larger than the sum of its proper divisors (2911969580).

2981991892 is a wasteful number, since it uses less digits than its factorization.

2981991892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19888 (or 19886 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 58.

The square root of 2981991892 is about 54607.6175272278. The cubic root of 2981991892 is about 1439.3579783301.

The spelling of 2981991892 in words is "two billion, nine hundred eighty-one million, nine hundred ninety-one thousand, eight hundred ninety-two".