189505359 has 16 divisors (see below), whose sum is σ = 281192800. Its totient is φ = 126137088.

The previous prime is 189505357. The next prime is 189505361. The reversal of 189505359 is 953505981.

It is an interprime number because it is at equal distance from previous prime (189505357) and next prime (189505361).

It is not a de Polignac number, because 189505359 - 2¹ = 189505357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189505357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12957 + ... + 23385.

It is an arithmetic number, because the mean of its divisors is an integer number (17574550).

Almost surely, 2^189505359 is an apocalyptic number.

189505359 is a deficient number, since it is larger than the sum of its proper divisors (91687441).

189505359 is a wasteful number, since it uses less digits than its factorization.

189505359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111 (or 11105 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 45.

The square root of 189505359 is about 13766.0945442053. The cubic root of 189505359 is about 574.3903900943.

The spelling of 189505359 in words is "one hundred eighty-nine million, five hundred five thousand, three hundred fifty-nine".