193216983 has 4 divisors (see below), whose sum is σ = 257622648. Its totient is φ = 128811320.

The previous prime is 193216981. The next prime is 193217027. The reversal of 193216983 is 389612391.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 193216983 - 2¹ = 193216981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193216981) 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, 32202828 + ... + 32202833.

It is an arithmetic number, because the mean of its divisors is an integer number (64405662).

Almost surely, 2^193216983 is an apocalyptic number.

193216983 is a deficient number, since it is larger than the sum of its proper divisors (64405665).

193216983 is an equidigital number, since it uses as much as digits as its factorization.

193216983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64405664.

The product of its digits is 69984, while the sum is 42.

The square root of 193216983 is about 13900.2511847808. The cubic root of 193216983 is about 578.1161460460.

It can be divided in two parts, 1932 and 16983, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 193216983 in words is "one hundred ninety-three million, two hundred sixteen thousand, nine hundred eighty-three".