4492829981 has 4 divisors (see below), whose sum is σ = 4577600412. Its totient is φ = 4408059552.

The previous prime is 4492829977. The next prime is 4492830019. The reversal of 4492829981 is 1899282944.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2049010756 + 2443819225 = 45266^2 + 49435^2 .

It is a cyclic number.

It is not a de Polignac number, because 4492829981 - 2² = 4492829977 is a prime.

It is a super-2 number, since 2×4492829981² = 40371042476344920722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4492822981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42385136 + ... + 42385241.

It is an arithmetic number, because the mean of its divisors is an integer number (1144400103).

Almost surely, 2^4492829981 is an apocalyptic number.

It is an amenable number.

4492829981 is a deficient number, since it is larger than the sum of its proper divisors (84770431).

4492829981 is an equidigital number, since it uses as much as digits as its factorization.

4492829981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84770430.

The product of its digits is 2985984, while the sum is 56.

The square root of 4492829981 is about 67028.5758538849. The cubic root of 4492829981 is about 1650.0863108814.

The spelling of 4492829981 in words is "four billion, four hundred ninety-two million, eight hundred twenty-nine thousand, nine hundred eighty-one".