189830165 has 48 divisors (see below), whose sum is σ = 279050112. Its totient is φ = 123451776.

The previous prime is 189830129. The next prime is 189830171. The reversal of 189830165 is 561038981.

It is a de Polignac number, because none of the positive numbers 2^k-189830165 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 389552 + ... + 390038.

It is an arithmetic number, because the mean of its divisors is an integer number (5813544).

Almost surely, 2^189830165 is an apocalyptic number.

189830165 is the 7955-th octagonal number.

It is an amenable number.

189830165 is a deficient number, since it is larger than the sum of its proper divisors (89219947).

189830165 is a wasteful number, since it uses less digits than its factorization.

189830165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 189830165 is about 13777.8868118446. The cubic root of 189830165 is about 574.7183649132.

The spelling of 189830165 in words is "one hundred eighty-nine million, eight hundred thirty thousand, one hundred sixty-five".