189394353 has 6 divisors (see below), whose sum is σ = 273569634. Its totient is φ = 126262896.

The previous prime is 189394313. The next prime is 189394357. The reversal of 189394353 is 353493981.

189394353 is a `hidden beast` number, since 189 + 39 + 435 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 182169009 + 7225344 = 13497^2 + 2688^2 .

It is not a de Polignac number, because 189394353 - 2¹⁰ = 189393329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189394299 and 189394308.

It is not an unprimeable number, because it can be changed into a prime (189394357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10521900 + ... + 10521917.

It is an arithmetic number, because the mean of its divisors is an integer number (45594939).

Almost surely, 2^189394353 is an apocalyptic number.

It is an amenable number.

189394353 is a deficient number, since it is larger than the sum of its proper divisors (84175281).

189394353 is a wasteful number, since it uses less digits than its factorization.

189394353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21043823 (or 21043820 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 189394353 is about 13762.0620911257. The cubic root of 189394353 is about 574.2782151955.

The spelling of 189394353 in words is "one hundred eighty-nine million, three hundred ninety-four thousand, three hundred fifty-three".