193894919 has 2 divisors, whose sum is σ = 193894920. Its totient is φ = 193894918.

The previous prime is 193894907. The next prime is 193894927. The reversal of 193894919 is 919498391.

193894919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 193894919 - 2⁸ = 193894663 is a prime.

It is a super-2 number, since 2×193894919² = 75190479228033122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193894969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96947459 + 96947460.

It is an arithmetic number, because the mean of its divisors is an integer number (96947460).

Almost surely, 2^193894919 is an apocalyptic number.

193894919 is a deficient number, since it is larger than the sum of its proper divisors (1).

193894919 is an equidigital number, since it uses as much as digits as its factorization.

193894919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 53.

The square root of 193894919 is about 13924.6155781767. The cubic root of 193894919 is about 578.7914977545.

The spelling of 193894919 in words is "one hundred ninety-three million, eight hundred ninety-four thousand, nine hundred nineteen".