196993305 has 12 divisors (see below), whose sum is σ = 341455140. Its totient is φ = 105063072.

The previous prime is 196993301. The next prime is 196993337. The reversal of 196993305 is 503399691.

It can be written as a sum of positive squares in 2 ways, for example, as 104775696 + 92217609 = 10236^2 + 9603^2 .

It is not a de Polignac number, because 196993305 - 2² = 196993301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4377629 = 196993305 / (1 + 9 + 6 + 9 + 9 + 3 + 3 + 0 + 5).

It is not an unprimeable number, because it can be changed into a prime (196993301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2188770 + ... + 2188859.

It is an arithmetic number, because the mean of its divisors is an integer number (28454595).

Almost surely, 2^196993305 is an apocalyptic number.

196993305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

196993305 is a deficient number, since it is larger than the sum of its proper divisors (144461835).

196993305 is a wasteful number, since it uses less digits than its factorization.

196993305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377640 (or 4377637 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 45.

The square root of 196993305 is about 14035.4303460920. The cubic root of 196993305 is about 581.8581951611.

The spelling of 196993305 in words is "one hundred ninety-six million, nine hundred ninety-three thousand, three hundred five".