3021181649 has 2 divisors, whose sum is σ = 3021181650. Its totient is φ = 3021181648.

The previous prime is 3021181643. The next prime is 3021181651. The reversal of 3021181649 is 9461811203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2419951249 + 601230400 = 49193^2 + 24520^2 .

It is a cyclic number.

It is not a de Polignac number, because 3021181649 - 2¹² = 3021177553 is a prime.

Together with 3021181651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3021181643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1510590824 + 1510590825.

It is an arithmetic number, because the mean of its divisors is an integer number (1510590825).

Almost surely, 2^3021181649 is an apocalyptic number.

It is an amenable number.

3021181649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3021181649 is an equidigital number, since it uses as much as digits as its factorization.

3021181649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 3021181649 is about 54965.2767572401. The cubic root of 3021181649 is about 1445.6359710591.

The spelling of 3021181649 in words is "three billion, twenty-one million, one hundred eighty-one thousand, six hundred forty-nine".