2143583961 has 8 divisors (see below), whose sum is σ = 2858819040. Its totient is φ = 1428702432.

The previous prime is 2143583951. The next prime is 2143583987. The reversal of 2143583961 is 1693853412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2143583961 - 2¹⁴ = 2143567577 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2143583951) 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, 73900 + ... + 98733.

It is an arithmetic number, because the mean of its divisors is an integer number (357352380).

Almost surely, 2^2143583961 is an apocalyptic number.

It is an amenable number.

2143583961 is a deficient number, since it is larger than the sum of its proper divisors (715235079).

2143583961 is a wasteful number, since it uses less digits than its factorization.

2143583961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176775.

The product of its digits is 155520, while the sum is 42.

The square root of 2143583961 is about 46298.8548562489. The cubic root of 2143583961 is about 1289.3777342548.

The spelling of 2143583961 in words is "two billion, one hundred forty-three million, five hundred eighty-three thousand, nine hundred sixty-one".