1441665161 has 8 divisors (see below), whose sum is σ = 1531906344. Its totient is φ = 1352028160.

The previous prime is 1441665157. The next prime is 1441665179. The reversal of 1441665161 is 1615661441.

It can be written as a sum of positive squares in 4 ways, for example, as 699919936 + 741745225 = 26456^2 + 27235^2 .

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 1441665161 - 2² = 1441665157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1441665131) 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, 146120 + ... + 155673.

It is an arithmetic number, because the mean of its divisors is an integer number (191488293).

Almost surely, 2^1441665161 is an apocalyptic number.

It is an amenable number.

1441665161 is a deficient number, since it is larger than the sum of its proper divisors (90241183).

1441665161 is a wasteful number, since it uses less digits than its factorization.

1441665161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302091.

The product of its digits is 17280, while the sum is 35.

The square root of 1441665161 is about 37969.2660055472. The cubic root of 1441665161 is about 1129.6783382365.

The spelling of 1441665161 in words is "one billion, four hundred forty-one million, six hundred sixty-five thousand, one hundred sixty-one".