3633304981 has 2 divisors, whose sum is σ = 3633304982. Its totient is φ = 3633304980.

The previous prime is 3633304979. The next prime is 3633305003. The reversal of 3633304981 is 1894033363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3562896100 + 70408881 = 59690^2 + 8391^2 .

It is a cyclic number.

It is not a de Polignac number, because 3633304981 - 2¹ = 3633304979 is a prime.

It is a super-2 number, since 2×3633304981² = 26401810169918820722, which contains 22 as substring.

Together with 3633304979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3633304931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1816652490 + 1816652491.

It is an arithmetic number, because the mean of its divisors is an integer number (1816652491).

Almost surely, 2^3633304981 is an apocalyptic number.

It is an amenable number.

3633304981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3633304981 is an equidigital number, since it uses as much as digits as its factorization.

3633304981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 40.

The square root of 3633304981 is about 60276.9025498159. The cubic root of 3633304981 is about 1537.3306460391.

The spelling of 3633304981 in words is "three billion, six hundred thirty-three million, three hundred four thousand, nine hundred eighty-one".