2981111892 has 48 divisors (see below), whose sum is σ = 7592378304. Its totient is φ = 902880000.

The previous prime is 2981111851. The next prime is 2981111897.

It is a happy number.

2981111892 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×2981111892² = 17774056225247639328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2981111897) 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, 296142 + ... + 306042.

It is an arithmetic number, because the mean of its divisors is an integer number (158174548).

Almost surely, 2^2981111892 is an apocalyptic number.

2981111892 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2981111892 is an abundant number, since it is smaller than the sum of its proper divisors (4611266412).

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

2981111892 is a wasteful number, since it uses less digits than its factorization.

2981111892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12200 (or 12198 counting only the distinct ones).

The product of its digits is 20736, while the sum is 42.

The square root of 2981111892 is about 54599.5594487721. The cubic root of 2981111892 is about 1439.2163772702.

It can be divided in two parts, 298111 and 1892, that added together give a palindrome (300003).

The spelling of 2981111892 in words is "two billion, nine hundred eighty-one million, one hundred eleven thousand, eight hundred ninety-two".