161463065 has 16 divisors (see below), whose sum is σ = 198726528. Its totient is φ = 125870976.

The previous prime is 161463061. The next prime is 161463067. The reversal of 161463065 is 560364161.

It is not a de Polignac number, because 161463065 - 2² = 161463061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161463061) 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 15 ways as a sum of consecutive naturals, for example, 155789 + ... + 156821.

It is an arithmetic number, because the mean of its divisors is an integer number (12420408).

Almost surely, 2^161463065 is an apocalyptic number.

It is an amenable number.

161463065 is a deficient number, since it is larger than the sum of its proper divisors (37263463).

161463065 is a wasteful number, since it uses less digits than its factorization.

161463065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 161463065 is about 12706.8117559048. The cubic root of 161463065 is about 544.5332423153.

The spelling of 161463065 in words is "one hundred sixty-one million, four hundred sixty-three thousand, sixty-five".