189896565 has 8 divisors (see below), whose sum is σ = 303834528. Its totient is φ = 101278160.

The previous prime is 189896561. The next prime is 189896569. The reversal of 189896565 is 565698981.

It is an interprime number because it is at equal distance from previous prime (189896561) and next prime (189896569).

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

It is not a de Polignac number, because 189896565 - 2² = 189896561 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189896561) 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, 6329871 + ... + 6329900.

It is an arithmetic number, because the mean of its divisors is an integer number (37979316).

Almost surely, 2^189896565 is an apocalyptic number.

189896565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189896565 is a deficient number, since it is larger than the sum of its proper divisors (113937963).

189896565 is a wasteful number, since it uses less digits than its factorization.

189896565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12659779.

The product of its digits is 4665600, while the sum is 57.

The square root of 189896565 is about 13780.2962595149. The cubic root of 189896565 is about 574.7853666475.

The spelling of 189896565 in words is "one hundred eighty-nine million, eight hundred ninety-six thousand, five hundred sixty-five".