196075891 has 4 divisors (see below), whose sum is σ = 213900984. Its totient is φ = 178250800.

The previous prime is 196075861. The next prime is 196075927. The reversal of 196075891 is 198570691.

It is a happy number.

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 196075891 - 2⁹ = 196075379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196075861) 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, 8912530 + ... + 8912551.

It is an arithmetic number, because the mean of its divisors is an integer number (53475246).

Almost surely, 2^196075891 is an apocalyptic number.

196075891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

196075891 is a deficient number, since it is larger than the sum of its proper divisors (17825093).

196075891 is a wasteful number, since it uses less digits than its factorization.

196075891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17825092.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 196075891 is about 14002.7101305426. The cubic root of 196075891 is about 580.9535355457.

The spelling of 196075891 in words is "one hundred ninety-six million, seventy-five thousand, eight hundred ninety-one".