2975489681 has 4 divisors (see below), whose sum is σ = 2975717172. Its totient is φ = 2975262192.

The previous prime is 2975489663. The next prime is 2975489689. The reversal of 2975489681 is 1869845792.

2975489681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2731630225 + 243859456 = 52265^2 + 15616^2 .

It is a cyclic number.

It is not a de Polignac number, because 2975489681 - 2¹⁰ = 2975488657 is a prime.

It is a super-2 number, since 2×2975489681² = 17707077683474963522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2975489681.

It is not an unprimeable number, because it can be changed into a prime (2975489689) 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, 92846 + ... + 120711.

It is an arithmetic number, because the mean of its divisors is an integer number (743929293).

Almost surely, 2^2975489681 is an apocalyptic number.

It is an amenable number.

2975489681 is a deficient number, since it is larger than the sum of its proper divisors (227491).

2975489681 is a wasteful number, since it uses less digits than its factorization.

2975489681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227490.

The product of its digits is 8709120, while the sum is 59.

The square root of 2975489681 is about 54548.0492868443. The cubic root of 2975489681 is about 1438.3110472532.

The spelling of 2975489681 in words is "two billion, nine hundred seventy-five million, four hundred eighty-nine thousand, six hundred eighty-one".