187594226401 has 2 divisors, whose sum is σ = 187594226402. Its totient is φ = 187594226400.

The previous prime is 187594226363. The next prime is 187594226437. The reversal of 187594226401 is 104622495781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168231225600 + 19363000801 = 410160^2 + 139151^2 .

It is a cyclic number.

It is not a de Polignac number, because 187594226401 - 2⁷ = 187594226273 is a prime.

It is not a weakly prime, because it can be changed into another prime (187594226461) 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, 93797113200 + 93797113201.

It is an arithmetic number, because the mean of its divisors is an integer number (93797113201).

Almost surely, 2^187594226401 is an apocalyptic number.

It is an amenable number.

187594226401 is a deficient number, since it is larger than the sum of its proper divisors (1).

187594226401 is an equidigital number, since it uses as much as digits as its factorization.

187594226401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 187594226401 in words is "one hundred eighty-seven billion, five hundred ninety-four million, two hundred twenty-six thousand, four hundred one".