194819 has 2 divisors, whose sum is σ = 194820. Its totient is φ = 194818.

The previous prime is 194813. The next prime is 194827. The reversal of 194819 is 918491.

194819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194819 is a prime.

It is a super-2 number, since 2×194819² = 75908885522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (194813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97409 + 97410.

It is an arithmetic number, because the mean of its divisors is an integer number (97410).

2¹⁹⁴⁸¹⁹ is an apocalyptic number.

194819 is a deficient number, since it is larger than the sum of its proper divisors (1).

194819 is an equidigital number, since it uses as much as digits as its factorization.

194819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 32.

The square root of 194819 is about 441.3830535940. The cubic root of 194819 is about 57.9709525576.

The spelling of 194819 in words is "one hundred ninety-four thousand, eight hundred nineteen".