2402982581 has 4 divisors (see below), whose sum is σ = 2404553664. Its totient is φ = 2401411500.

The previous prime is 2402982559. The next prime is 2402982587. The reversal of 2402982581 is 1852892042.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1852892042 = 2 ⋅926446021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2402982581 is a prime.

It is a super-2 number, since 2×2402982581² = 11548650569178843122, 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 (2402982587) 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, 783245 + ... + 786306.

It is an arithmetic number, because the mean of its divisors is an integer number (601138416).

Almost surely, 2^2402982581 is an apocalyptic number.

It is an amenable number.

2402982581 is a deficient number, since it is larger than the sum of its proper divisors (1571083).

2402982581 is a wasteful number, since it uses less digits than its factorization.

2402982581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571082.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 2402982581 is about 49020.2262438679. The cubic root of 2402982581 is about 1339.4202922383.

The spelling of 2402982581 in words is "two billion, four hundred two million, nine hundred eighty-two thousand, five hundred eighty-one".