194073157 has 2 divisors, whose sum is σ = 194073158. Its totient is φ = 194073156.

The previous prime is 194073119. The next prime is 194073167. The reversal of 194073157 is 751370491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192820996 + 1252161 = 13886^2 + 1119^2 .

It is an emirp because it is prime and its reverse (751370491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194073157 - 2¹¹ = 194071109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194073167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97036578 + 97036579.

It is an arithmetic number, because the mean of its divisors is an integer number (97036579).

Almost surely, 2^194073157 is an apocalyptic number.

It is an amenable number.

194073157 is a deficient number, since it is larger than the sum of its proper divisors (1).

194073157 is an equidigital number, since it uses as much as digits as its factorization.

194073157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 37.

The square root of 194073157 is about 13931.0142128992. The cubic root of 194073157 is about 578.9687948954.

The spelling of 194073157 in words is "one hundred ninety-four million, seventy-three thousand, one hundred fifty-seven".