196352391 has 4 divisors (see below), whose sum is σ = 261803192. Its totient is φ = 130901592.

The previous prime is 196352339. The next prime is 196352399. The reversal of 196352391 is 193253691.

196352391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 196352391 - 2⁷ = 196352263 is a prime.

It is a super-2 number, since 2×196352391² = 77108522902833762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196352399) 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, 32725396 + ... + 32725401.

It is an arithmetic number, because the mean of its divisors is an integer number (65450798).

Almost surely, 2^196352391 is an apocalyptic number.

196352391 is a deficient number, since it is larger than the sum of its proper divisors (65450801).

196352391 is an equidigital number, since it uses as much as digits as its factorization.

196352391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65450800.

The product of its digits is 43740, while the sum is 39.

The square root of 196352391 is about 14012.5797410755. The cubic root of 196352391 is about 581.2264880303.

The spelling of 196352391 in words is "one hundred ninety-six million, three hundred fifty-two thousand, three hundred ninety-one".