196537823 has 2 divisors, whose sum is σ = 196537824. Its totient is φ = 196537822.

The previous prime is 196537813. The next prime is 196537837. The reversal of 196537823 is 328735691.

It is a weak prime.

It is an emirp because it is prime and its reverse (328735691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196537823 - 2⁴ = 196537807 is a prime.

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 (196537813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98268911 + 98268912.

It is an arithmetic number, because the mean of its divisors is an integer number (98268912).

Almost surely, 2^196537823 is an apocalyptic number.

196537823 is a deficient number, since it is larger than the sum of its proper divisors (1).

196537823 is an equidigital number, since it uses as much as digits as its factorization.

196537823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 196537823 is about 14019.1948056941. The cubic root of 196537823 is about 581.4093974064.

The spelling of 196537823 in words is "one hundred ninety-six million, five hundred thirty-seven thousand, eight hundred twenty-three".