189398169601 has 9 divisors (see below), whose sum is σ = 189980946499. Its totient is φ = 188817178936.

The previous prime is 189398169599. The next prime is 189398169637. The reversal of 189398169601 is 106961893981.

The square root of 189398169601 is 435199.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12052746225 + 177345423376 = 109785^2 + 421124^2 .

It is not a de Polignac number, because 189398169601 - 2¹ = 189398169599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189398169601.

It is not an unprimeable number, because it can be changed into a prime (189398169001) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 245016651 + ... + 245017423.

Almost surely, 2^189398169601 is an apocalyptic number.

189398169601 is the 435199-th square number.

189398169601 is the 217600-th centered octagonal number.

It is an amenable number.

189398169601 is a deficient number, since it is larger than the sum of its proper divisors (582776898).

189398169601 is an frugal number, since it uses more digits than its factorization.

189398169601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 61.

The spelling of 189398169601 in words is "one hundred eighty-nine billion, three hundred ninety-eight million, one hundred sixty-nine thousand, six hundred one".