189747360017 has 2 divisors, whose sum is σ = 189747360018. Its totient is φ = 189747360016.

The previous prime is 189747359969. The next prime is 189747360041. The reversal of 189747360017 is 710063747981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142726039681 + 47021320336 = 377791^2 + 216844^2 .

It is a cyclic number.

It is not a de Polignac number, because 189747360017 - 2¹⁰ = 189747358993 is a prime.

It is not a weakly prime, because it can be changed into another prime (189747360917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94873680008 + 94873680009.

It is an arithmetic number, because the mean of its divisors is an integer number (94873680009).

Almost surely, 2^189747360017 is an apocalyptic number.

It is an amenable number.

189747360017 is a deficient number, since it is larger than the sum of its proper divisors (1).

189747360017 is an equidigital number, since it uses as much as digits as its factorization.

189747360017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The spelling of 189747360017 in words is "one hundred eighty-nine billion, seven hundred forty-seven million, three hundred sixty thousand, seventeen".