749729870189 has 2 divisors, whose sum is σ = 749729870190. Its totient is φ = 749729870188.

The previous prime is 749729870179. The next prime is 749729870209. The reversal of 749729870189 is 981078927947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 518604500164 + 231125370025 = 720142^2 + 480755^2 .

It is an emirp because it is prime and its reverse (981078927947) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-749729870189 is a prime.

It is a super-2 number, since 2×749729870189² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (749729870129) 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, 374864935094 + 374864935095.

It is an arithmetic number, because the mean of its divisors is an integer number (374864935095).

Almost surely, 2^749729870189 is an apocalyptic number.

It is an amenable number.

749729870189 is a deficient number, since it is larger than the sum of its proper divisors (1).

749729870189 is an equidigital number, since it uses as much as digits as its factorization.

749729870189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128024064, while the sum is 71.

The spelling of 749729870189 in words is "seven hundred forty-nine billion, seven hundred twenty-nine million, eight hundred seventy thousand, one hundred eighty-nine".