2915039921 has 2 divisors, whose sum is σ = 2915039922. Its totient is φ = 2915039920.

The previous prime is 2915039867. The next prime is 2915039923. The reversal of 2915039921 is 1299305192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2729017600 + 186022321 = 52240^2 + 13639^2 .

It is a cyclic number.

It is not a de Polignac number, because 2915039921 - 2¹⁰ = 2915038897 is a prime.

Together with 2915039923, 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 (2915039923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1457519960 + 1457519961.

It is an arithmetic number, because the mean of its divisors is an integer number (1457519961).

Almost surely, 2^2915039921 is an apocalyptic number.

It is an amenable number.

2915039921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2915039921 is an equidigital number, since it uses as much as digits as its factorization.

2915039921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 2915039921 is about 53991.1096477929. The cubic root of 2915039921 is about 1428.5041363079.

The spelling of 2915039921 in words is "two billion, nine hundred fifteen million, thirty-nine thousand, nine hundred twenty-one".