196523693 has 2 divisors, whose sum is σ = 196523694. Its totient is φ = 196523692.

The previous prime is 196523581. The next prime is 196523741. The reversal of 196523693 is 396325691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131285764 + 65237929 = 11458^2 + 8077^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196523693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196523993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98261846 + 98261847.

It is an arithmetic number, because the mean of its divisors is an integer number (98261847).

Almost surely, 2^196523693 is an apocalyptic number.

It is an amenable number.

196523693 is a deficient number, since it is larger than the sum of its proper divisors (1).

196523693 is an equidigital number, since it uses as much as digits as its factorization.

196523693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 44.

The square root of 196523693 is about 14018.6908447258. The cubic root of 196523693 is about 581.3954636819.

The spelling of 196523693 in words is "one hundred ninety-six million, five hundred twenty-three thousand, six hundred ninety-three".