194963413 has 2 divisors, whose sum is σ = 194963414. Its totient is φ = 194963412.

The previous prime is 194963411. The next prime is 194963443. The reversal of 194963413 is 314369491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193265604 + 1697809 = 13902^2 + 1303^2 .

It is a cyclic number.

It is not a de Polignac number, because 194963413 - 2¹ = 194963411 is a prime.

Together with 194963411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194963411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97481706 + 97481707.

It is an arithmetic number, because the mean of its divisors is an integer number (97481707).

Almost surely, 2^194963413 is an apocalyptic number.

194963413 is the 7464-th centered heptagonal number.

It is an amenable number.

194963413 is a deficient number, since it is larger than the sum of its proper divisors (1).

194963413 is an equidigital number, since it uses as much as digits as its factorization.

194963413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 40.

The square root of 194963413 is about 13962.9299575698. The cubic root of 194963413 is about 579.8527301480.

The spelling of 194963413 in words is "one hundred ninety-four million, nine hundred sixty-three thousand, four hundred thirteen".