189393853 has 8 divisors (see below), whose sum is σ = 206726400. Its totient is φ = 172080480.

The previous prime is 189393847. The next prime is 189393859. The reversal of 189393853 is 358393981.

It is an interprime number because it is at equal distance from previous prime (189393847) and next prime (189393859).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-189393853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189393797 and 189393806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189393859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22801 + ... + 29977.

It is an arithmetic number, because the mean of its divisors is an integer number (25840800).

Almost surely, 2^189393853 is an apocalyptic number.

It is an amenable number.

189393853 is a deficient number, since it is larger than the sum of its proper divisors (17332547).

189393853 is a wasteful number, since it uses less digits than its factorization.

189393853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9587.

The product of its digits is 699840, while the sum is 49.

The square root of 189393853 is about 13762.0439252315. The cubic root of 189393853 is about 574.2777098314.

The spelling of 189393853 in words is "one hundred eighty-nine million, three hundred ninety-three thousand, eight hundred fifty-three".