10194587257 has 2 divisors, whose sum is σ = 10194587258. Its totient is φ = 10194587256.

The previous prime is 10194587203. The next prime is 10194587267. The reversal of 10194587257 is 75278549101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10153383696 + 41203561 = 100764^2 + 6419^2 .

It is a cyclic number.

It is not a de Polignac number, because 10194587257 - 2¹⁹ = 10194062969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10194587257.

It is not a weakly prime, because it can be changed into another prime (10194587267) 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, 5097293628 + 5097293629.

It is an arithmetic number, because the mean of its divisors is an integer number (5097293629).

Almost surely, 2^10194587257 is an apocalyptic number.

It is an amenable number.

10194587257 is a deficient number, since it is larger than the sum of its proper divisors (1).

10194587257 is an equidigital number, since it uses as much as digits as its factorization.

10194587257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 705600, while the sum is 49.

The spelling of 10194587257 in words is "ten billion, one hundred ninety-four million, five hundred eighty-seven thousand, two hundred fifty-seven".