196258809 has 8 divisors (see below), whose sum is σ = 275451040. Its totient is φ = 123952896.

The previous prime is 196258801. The next prime is 196258813. The reversal of 196258809 is 908852691.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 196258809 - 2³ = 196258801 is a prime.

It is a super-2 number, since 2×196258809² = 77035040220196962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196258801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1721512 + ... + 1721625.

It is an arithmetic number, because the mean of its divisors is an integer number (34431380).

Almost surely, 2^196258809 is an apocalyptic number.

196258809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

196258809 is a deficient number, since it is larger than the sum of its proper divisors (79192231).

196258809 is a wasteful number, since it uses less digits than its factorization.

196258809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443159.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 196258809 is about 14009.2401292861. The cubic root of 196258809 is about 581.1341353977.

The spelling of 196258809 in words is "one hundred ninety-six million, two hundred fifty-eight thousand, eight hundred nine".