194120957 has 2 divisors, whose sum is σ = 194120958. Its totient is φ = 194120956.

The previous prime is 194120947. The next prime is 194120987. The reversal of 194120957 is 759021491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189502756 + 4618201 = 13766^2 + 2149^2 .

It is a cyclic number.

It is not a de Polignac number, because 194120957 - 2¹² = 194116861 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 194120957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194120947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97060478 + 97060479.

It is an arithmetic number, because the mean of its divisors is an integer number (97060479).

Almost surely, 2^194120957 is an apocalyptic number.

It is an amenable number.

194120957 is a deficient number, since it is larger than the sum of its proper divisors (1).

194120957 is an equidigital number, since it uses as much as digits as its factorization.

194120957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 194120957 is about 13932.7297038305. The cubic root of 194120957 is about 579.0163241142.

The spelling of 194120957 in words is "one hundred ninety-four million, one hundred twenty thousand, nine hundred fifty-seven".