161107289 has 8 divisors (see below), whose sum is σ = 193813440. Its totient is φ = 130823856.

The previous prime is 161107273. The next prime is 161107291. The reversal of 161107289 is 982701161.

161107289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 161107289 - 2⁴ = 161107273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161107259) 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, 605534 + ... + 605799.

It is an arithmetic number, because the mean of its divisors is an integer number (24226680).

Almost surely, 2^161107289 is an apocalyptic number.

161107289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

161107289 is a deficient number, since it is larger than the sum of its proper divisors (32706151).

161107289 is a wasteful number, since it uses less digits than its factorization.

161107289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211359.

The product of its (nonzero) digits is 6048, while the sum is 35.

The square root of 161107289 is about 12692.8046152141. The cubic root of 161107289 is about 544.1329973714.

It can be divided in two parts, 1611072 and 89, that added together give a palindrome (1611161).

The spelling of 161107289 in words is "one hundred sixty-one million, one hundred seven thousand, two hundred eighty-nine".