2916043021 has 2 divisors, whose sum is σ = 2916043022. Its totient is φ = 2916043020.

The previous prime is 2916043019. The next prime is 2916043049. The reversal of 2916043021 is 1203406192.

It is an a-pointer prime, because the next prime (2916043049) can be obtained adding 2916043021 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1767782025 + 1148260996 = 42045^2 + 33886^2 .

It is a cyclic number.

It is not a de Polignac number, because 2916043021 - 2¹ = 2916043019 is a prime.

Together with 2916043019, 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 (2916043051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1458021510 + 1458021511.

It is an arithmetic number, because the mean of its divisors is an integer number (1458021511).

Almost surely, 2^2916043021 is an apocalyptic number.

It is an amenable number.

2916043021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2916043021 is an equidigital number, since it uses as much as digits as its factorization.

2916043021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2916043021 is about 54000.3983411234. The cubic root of 2916043021 is about 1428.6679726196.

The spelling of 2916043021 in words is "two billion, nine hundred sixteen million, forty-three thousand, twenty-one".