194925143437 has 2 divisors, whose sum is σ = 194925143438. Its totient is φ = 194925143436.

The previous prime is 194925143377. The next prime is 194925143461. The reversal of 194925143437 is 734341529491.

194925143437 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 can be written as a sum of positive squares in only one way, i.e., 173477248036 + 21447895401 = 416506^2 + 146451^2 .

It is a cyclic number.

It is not a de Polignac number, because 194925143437 - 2³⁵ = 160565405069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194925140437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97462571718 + 97462571719.

It is an arithmetic number, because the mean of its divisors is an integer number (97462571719).

Almost surely, 2^194925143437 is an apocalyptic number.

It is an amenable number.

194925143437 is a deficient number, since it is larger than the sum of its proper divisors (1).

194925143437 is an equidigital number, since it uses as much as digits as its factorization.

194925143437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 52.

The spelling of 194925143437 in words is "one hundred ninety-four billion, nine hundred twenty-five million, one hundred forty-three thousand, four hundred thirty-seven".