189698208017 has 2 divisors, whose sum is σ = 189698208018. Its totient is φ = 189698208016.

The previous prime is 189698207969. The next prime is 189698208031. The reversal of 189698208017 is 710802896981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189238920256 + 459287761 = 435016^2 + 21431^2 .

It is an emirp because it is prime and its reverse (710802896981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189698208017 - 2¹⁶ = 189698142481 is a prime.

It is a super-2 number, since 2×189698208017² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (189698205017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94849104008 + 94849104009.

It is an arithmetic number, because the mean of its divisors is an integer number (94849104009).

Almost surely, 2^189698208017 is an apocalyptic number.

It is an amenable number.

189698208017 is a deficient number, since it is larger than the sum of its proper divisors (1).

189698208017 is an equidigital number, since it uses as much as digits as its factorization.

189698208017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3483648, while the sum is 59.

The spelling of 189698208017 in words is "one hundred eighty-nine billion, six hundred ninety-eight million, two hundred eight thousand, seventeen".