196345511 has 2 divisors, whose sum is σ = 196345512. Its totient is φ = 196345510.

The previous prime is 196345507. The next prime is 196345531. The reversal of 196345511 is 115543691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 196345511 - 2² = 196345507 is a prime.

It is a super-2 number, since 2×196345511² = 77103119379702242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196345531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98172755 + 98172756.

It is an arithmetic number, because the mean of its divisors is an integer number (98172756).

Almost surely, 2^196345511 is an apocalyptic number.

196345511 is a deficient number, since it is larger than the sum of its proper divisors (1).

196345511 is an equidigital number, since it uses as much as digits as its factorization.

196345511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 35.

The square root of 196345511 is about 14012.3342452284. The cubic root of 196345511 is about 581.2196994109.

It can be divided in two parts, 1963 and 45511, that added together give a palindrome (47474).

The spelling of 196345511 in words is "one hundred ninety-six million, three hundred forty-five thousand, five hundred eleven".