196805369 has 4 divisors (see below), whose sum is σ = 197074596. Its totient is φ = 196536144.

The previous prime is 196805351. The next prime is 196805387. The reversal of 196805369 is 963508691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 963508691 = 13399 ⋅71909.

It is an interprime number because it is at equal distance from previous prime (196805351) and next prime (196805387).

It can be written as a sum of positive squares in 2 ways, for example, as 194881600 + 1923769 = 13960^2 + 1387^2 .

It is a cyclic number.

It is not a de Polignac number, because 196805369 - 2¹⁶ = 196739833 is a prime.

It is a super-2 number, since 2×196805369² = 77464706534452322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (196801369) 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, 133514 + ... + 134979.

It is an arithmetic number, because the mean of its divisors is an integer number (49268649).

Almost surely, 2^196805369 is an apocalyptic number.

It is an amenable number.

196805369 is a deficient number, since it is larger than the sum of its proper divisors (269227).

196805369 is an equidigital number, since it uses as much as digits as its factorization.

196805369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269226.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 196805369 is about 14028.7336919624. The cubic root of 196805369 is about 581.6731010619.

The spelling of 196805369 in words is "one hundred ninety-six million, eight hundred five thousand, three hundred sixty-nine".