160611989 has 8 divisors (see below), whose sum is σ = 161920920. Its totient is φ = 159307776.

The previous prime is 160611973. The next prime is 160611991. The reversal of 160611989 is 989116061.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 149255089 + 11356900 = 12217^2 + 3370^2 .

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 160611989 - 2⁴ = 160611973 is a prime.

It is a super-2 number, since 2×160611989² = 51592422021072242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160611089) 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, 99017 + ... + 100625.

It is an arithmetic number, because the mean of its divisors is an integer number (20240115).

Almost surely, 2^160611989 is an apocalyptic number.

It is an amenable number.

160611989 is a deficient number, since it is larger than the sum of its proper divisors (1308931).

160611989 is a wasteful number, since it uses less digits than its factorization.

160611989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 160611989 is about 12673.2785418770. The cubic root of 160611989 is about 543.5748067473.

The spelling of 160611989 in words is "one hundred sixty million, six hundred eleven thousand, nine hundred eighty-nine".