16971963 has 4 divisors (see below), whose sum is σ = 22629288. Its totient is φ = 11314640.

The previous prime is 16971961. The next prime is 16971979. The reversal of 16971963 is 36917961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36917961 = 3 ⋅12305987.

It is a cyclic number.

It is not a de Polignac number, because 16971963 - 2¹ = 16971961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16971961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2828658 + ... + 2828663.

It is an arithmetic number, because the mean of its divisors is an integer number (5657322).

Almost surely, 2^16971963 is an apocalyptic number.

16971963 is a deficient number, since it is larger than the sum of its proper divisors (5657325).

16971963 is an equidigital number, since it uses as much as digits as its factorization.

16971963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5657324.

The product of its digits is 61236, while the sum is 42.

The square root of 16971963 is about 4119.7042369568. The cubic root of 16971963 is about 256.9867263403.

The spelling of 16971963 in words is "sixteen million, nine hundred seventy-one thousand, nine hundred sixty-three".