16498316491 has 2 divisors, whose sum is σ = 16498316492. Its totient is φ = 16498316490.

The previous prime is 16498316477. The next prime is 16498316501. The reversal of 16498316491 is 19461389461.

It is a strong prime.

It is an emirp because it is prime and its reverse (19461389461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16498316491 - 2¹⁵ = 16498283723 is a prime.

It is not a weakly prime, because it can be changed into another prime (16498316431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8249158245 + 8249158246.

It is an arithmetic number, because the mean of its divisors is an integer number (8249158246).

Almost surely, 2^16498316491 is an apocalyptic number.

16498316491 is a deficient number, since it is larger than the sum of its proper divisors (1).

16498316491 is an equidigital number, since it uses as much as digits as its factorization.

16498316491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 52.

The spelling of 16498316491 in words is "sixteen billion, four hundred ninety-eight million, three hundred sixteen thousand, four hundred ninety-one".