16286031491 has 2 divisors, whose sum is σ = 16286031492. Its totient is φ = 16286031490.

The previous prime is 16286031451. The next prime is 16286031493. The reversal of 16286031491 is 19413068261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16286031491 - 2¹⁸ = 16285769347 is a prime.

It is a Sophie Germain prime.

Together with 16286031493, 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 (16286031493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8143015745 + 8143015746.

It is an arithmetic number, because the mean of its divisors is an integer number (8143015746).

Almost surely, 2^16286031491 is an apocalyptic number.

16286031491 is a deficient number, since it is larger than the sum of its proper divisors (1).

16286031491 is an equidigital number, since it uses as much as digits as its factorization.

16286031491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 41.

The spelling of 16286031491 in words is "sixteen billion, two hundred eighty-six million, thirty-one thousand, four hundred ninety-one".