189385247353 has 2 divisors, whose sum is σ = 189385247354. Its totient is φ = 189385247352.

The previous prime is 189385247323. The next prime is 189385247411. The reversal of 189385247353 is 353742583981.

It is a happy number.

It is an a-pointer prime, because the next prime (189385247411) can be obtained adding 189385247353 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189200640784 + 184606569 = 434972^2 + 13587^2 .

It is a cyclic number.

It is not a de Polignac number, because 189385247353 - 2¹³ = 189385239161 is a prime.

It is not a weakly prime, because it can be changed into another prime (189385247323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94692623676 + 94692623677.

It is an arithmetic number, because the mean of its divisors is an integer number (94692623677).

Almost surely, 2^189385247353 is an apocalyptic number.

It is an amenable number.

189385247353 is a deficient number, since it is larger than the sum of its proper divisors (1).

189385247353 is an equidigital number, since it uses as much as digits as its factorization.

189385247353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 58.

The spelling of 189385247353 in words is "one hundred eighty-nine billion, three hundred eighty-five million, two hundred forty-seven thousand, three hundred fifty-three".