16939963163 has 4 divisors (see below), whose sum is σ = 16942159248. Its totient is φ = 16937767080.

The previous prime is 16939963091. The next prime is 16939963177. The reversal of 16939963163 is 36136993961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36136993961 = 58657 ⋅616073.

It is a cyclic number.

It is not a de Polignac number, because 16939963163 - 2¹⁸ = 16939701019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16939963099 and 16939963108.

It is not an unprimeable number, because it can be changed into a prime (16939963763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086431 + ... + 1101912.

It is an arithmetic number, because the mean of its divisors is an integer number (4235539812).

Almost surely, 2^16939963163 is an apocalyptic number.

16939963163 is a deficient number, since it is larger than the sum of its proper divisors (2196085).

16939963163 is an equidigital number, since it uses as much as digits as its factorization.

16939963163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196084.

The product of its digits is 4251528, while the sum is 56.

The spelling of 16939963163 in words is "sixteen billion, nine hundred thirty-nine million, nine hundred sixty-three thousand, one hundred sixty-three".