161339065 has 8 divisors (see below), whose sum is σ = 193714560. Its totient is φ = 128999472.

The previous prime is 161339063. The next prime is 161339069. The reversal of 161339065 is 560933161.

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

It is a cyclic number.

It is not a de Polignac number, because 161339065 - 2¹ = 161339063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 161339065.

It is not an unprimeable number, because it can be changed into a prime (161339063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2176 + ... + 18094.

It is an arithmetic number, because the mean of its divisors is an integer number (24214320).

Almost surely, 2^161339065 is an apocalyptic number.

It is an amenable number.

161339065 is a deficient number, since it is larger than the sum of its proper divisors (32375495).

161339065 is a wasteful number, since it uses less digits than its factorization.

161339065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17951.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 161339065 is about 12701.9315460287. The cubic root of 161339065 is about 544.3938101907.

The spelling of 161339065 in words is "one hundred sixty-one million, three hundred thirty-nine thousand, sixty-five".