161000911 has 8 divisors (see below), whose sum is σ = 165574800. Its totient is φ = 156488640.

The previous prime is 161000869. The next prime is 161000921. The reversal of 161000911 is 119000161.

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 161000911 - 2⁷ = 161000783 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 (161000921) 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, 10080 + ... + 20581.

It is an arithmetic number, because the mean of its divisors is an integer number (20696850).

Almost surely, 2^161000911 is an apocalyptic number.

161000911 is a deficient number, since it is larger than the sum of its proper divisors (4573889).

161000911 is an equidigital number, since it uses as much as digits as its factorization.

161000911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30809.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 161000911 is about 12688.6134388277. The cubic root of 161000911 is about 544.0132086164.

The spelling of 161000911 in words is "one hundred sixty-one million, nine hundred eleven", and thus it is an aban number.