194169916019 has 2 divisors, whose sum is σ = 194169916020. Its totient is φ = 194169916018.

The previous prime is 194169915931. The next prime is 194169916037. The reversal of 194169916019 is 910619961491.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194169916019 is a prime.

It is a super-2 number, since 2×194169916019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (194169216019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97084958009 + 97084958010.

It is an arithmetic number, because the mean of its divisors is an integer number (97084958010).

Almost surely, 2^194169916019 is an apocalyptic number.

194169916019 is a deficient number, since it is larger than the sum of its proper divisors (1).

194169916019 is an equidigital number, since it uses as much as digits as its factorization.

194169916019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 56.

The spelling of 194169916019 in words is "one hundred ninety-four billion, one hundred sixty-nine million, nine hundred sixteen thousand, nineteen".