2287992961 has 4 divisors (see below), whose sum is σ = 2366889300. Its totient is φ = 2209096624.

The previous prime is 2287992929. The next prime is 2287992979. The reversal of 2287992961 is 1692997822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1356522561 + 931470400 = 36831^2 + 30520^2 .

It is a cyclic number.

It is not a de Polignac number, because 2287992961 - 2⁵ = 2287992929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2287992911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39448126 + ... + 39448183.

It is an arithmetic number, because the mean of its divisors is an integer number (591722325).

Almost surely, 2^2287992961 is an apocalyptic number.

It is an amenable number.

2287992961 is a deficient number, since it is larger than the sum of its proper divisors (78896339).

2287992961 is an equidigital number, since it uses as much as digits as its factorization.

2287992961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78896338.

The product of its digits is 1959552, while the sum is 55.

The square root of 2287992961 is about 47832.9693935051. The cubic root of 2287992961 is about 1317.7051036024.

The spelling of 2287992961 in words is "two billion, two hundred eighty-seven million, nine hundred ninety-two thousand, nine hundred sixty-one".