194317850537 has 2 divisors, whose sum is σ = 194317850538. Its totient is φ = 194317850536.

The previous prime is 194317850501. The next prime is 194317850543. The reversal of 194317850537 is 735058713491.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140760782761 + 53557067776 = 375181^2 + 231424^2 .

It is a cyclic number.

It is not a de Polignac number, because 194317850537 - 2¹⁶ = 194317785001 is a prime.

It is not a weakly prime, because it can be changed into another prime (194317810537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97158925268 + 97158925269.

It is an arithmetic number, because the mean of its divisors is an integer number (97158925269).

Almost surely, 2^194317850537 is an apocalyptic number.

It is an amenable number.

194317850537 is a deficient number, since it is larger than the sum of its proper divisors (1).

194317850537 is an equidigital number, since it uses as much as digits as its factorization.

194317850537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 194317850537 in words is "one hundred ninety-four billion, three hundred seventeen million, eight hundred fifty thousand, five hundred thirty-seven".