16498013281 has 2 divisors, whose sum is σ = 16498013282. Its totient is φ = 16498013280.

The previous prime is 16498013263. The next prime is 16498013293. The reversal of 16498013281 is 18231089461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13795677025 + 2702336256 = 117455^2 + 51984^2 .

It is a cyclic number.

It is not a de Polignac number, because 16498013281 - 2⁵ = 16498013249 is a prime.

It is a super-2 number, since 2×16498013281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16498013381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8249006640 + 8249006641.

It is an arithmetic number, because the mean of its divisors is an integer number (8249006641).

Almost surely, 2^16498013281 is an apocalyptic number.

It is an amenable number.

16498013281 is a deficient number, since it is larger than the sum of its proper divisors (1).

16498013281 is an equidigital number, since it uses as much as digits as its factorization.

16498013281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 16498013281 in words is "sixteen billion, four hundred ninety-eight million, thirteen thousand, two hundred eighty-one".