16398533819 has 2 divisors, whose sum is σ = 16398533820. Its totient is φ = 16398533818.

The previous prime is 16398533797. The next prime is 16398533831. The reversal of 16398533819 is 91833589361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16398533819 - 2⁸ = 16398533563 is a prime.

It is a super-2 number, since 2×16398533819² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16398533839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8199266909 + 8199266910.

It is an arithmetic number, because the mean of its divisors is an integer number (8199266910).

Almost surely, 2^16398533819 is an apocalyptic number.

16398533819 is a deficient number, since it is larger than the sum of its proper divisors (1).

16398533819 is an equidigital number, since it uses as much as digits as its factorization.

16398533819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 56.

The spelling of 16398533819 in words is "sixteen billion, three hundred ninety-eight million, five hundred thirty-three thousand, eight hundred nineteen".