2891716523 has 2 divisors, whose sum is σ = 2891716524. Its totient is φ = 2891716522.

The previous prime is 2891716483. The next prime is 2891716577. The reversal of 2891716523 is 3256171982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2891716523 - 2⁶ = 2891716459 is a prime.

It is not a weakly prime, because it can be changed into another prime (2891716123) 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, 1445858261 + 1445858262.

It is an arithmetic number, because the mean of its divisors is an integer number (1445858262).

Almost surely, 2^2891716523 is an apocalyptic number.

2891716523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2891716523 is an equidigital number, since it uses as much as digits as its factorization.

2891716523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 2891716523 is about 53774.6829186375. The cubic root of 2891716523 is about 1424.6840827119.

The spelling of 2891716523 in words is "two billion, eight hundred ninety-one million, seven hundred sixteen thousand, five hundred twenty-three".