4507279981 has 2 divisors, whose sum is σ = 4507279982. Its totient is φ = 4507279980.

The previous prime is 4507279969. The next prime is 4507279991. The reversal of 4507279981 is 1899727054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3598800100 + 908479881 = 59990^2 + 30141^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4507279981 is a prime.

It is a super-2 number, since 2×4507279981² = 40631145654246720722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4507279991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2253639990 + 2253639991.

It is an arithmetic number, because the mean of its divisors is an integer number (2253639991).

Almost surely, 2^4507279981 is an apocalyptic number.

It is an amenable number.

4507279981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4507279981 is an equidigital number, since it uses as much as digits as its factorization.

4507279981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The square root of 4507279981 is about 67136.2791715478. The cubic root of 4507279981 is about 1651.8534398773.

The spelling of 4507279981 in words is "four billion, five hundred seven million, two hundred seventy-nine thousand, nine hundred eighty-one".