2578672969 has 4 divisors (see below), whose sum is σ = 2661856000. Its totient is φ = 2495489940.

The previous prime is 2578672963. The next prime is 2578672981. The reversal of 2578672969 is 9692768752.

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.

It is a cyclic number.

It is not a de Polignac number, because 2578672969 - 2⁵ = 2578672937 is a prime.

It is a super-2 number, since 2×2578672969² = 13299108562102549922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2578672963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41591469 + ... + 41591530.

It is an arithmetic number, because the mean of its divisors is an integer number (665464000).

Almost surely, 2^2578672969 is an apocalyptic number.

It is an amenable number.

2578672969 is a deficient number, since it is larger than the sum of its proper divisors (83183031).

2578672969 is an equidigital number, since it uses as much as digits as its factorization.

2578672969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83183030.

The product of its digits is 22861440, while the sum is 61.

The square root of 2578672969 is about 50780.6357679775. The cubic root of 2578672969 is about 1371.2987788290.

The spelling of 2578672969 in words is "two billion, five hundred seventy-eight million, six hundred seventy-two thousand, nine hundred sixty-nine".