194442427 has 2 divisors, whose sum is σ = 194442428. Its totient is φ = 194442426.

The previous prime is 194442401. The next prime is 194442439. The reversal of 194442427 is 724244491.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194442427 - 2¹⁹ = 193918139 is a prime.

It is not a weakly prime, because it can be changed into another prime (194442497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97221213 + 97221214.

It is an arithmetic number, because the mean of its divisors is an integer number (97221214).

Almost surely, 2^194442427 is an apocalyptic number.

194442427 is a deficient number, since it is larger than the sum of its proper divisors (1).

194442427 is an equidigital number, since it uses as much as digits as its factorization.

194442427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 37.

The square root of 194442427 is about 13944.2614361608. The cubic root of 194442427 is about 579.3357705149.

The spelling of 194442427 in words is "one hundred ninety-four million, four hundred forty-two thousand, four hundred twenty-seven".