2581429976 has 16 divisors (see below), whose sum is σ = 4844759040. Its totient is φ = 1289494240.

The previous prime is 2581429967. The next prime is 2581429979. The reversal of 2581429976 is 6799241852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581429979) 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, 143576 + ... + 160551.

It is an arithmetic number, because the mean of its divisors is an integer number (302797440).

Almost surely, 2^2581429976 is an apocalyptic number.

It is an amenable number.

2581429976 is a deficient number, since it is larger than the sum of its proper divisors (2263329064).

2581429976 is a wasteful number, since it uses less digits than its factorization.

2581429976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305194 (or 305190 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 53.

The square root of 2581429976 is about 50807.7747593811. The cubic root of 2581429976 is about 1371.7873161241.

The spelling of 2581429976 in words is "two billion, five hundred eighty-one million, four hundred twenty-nine thousand, nine hundred seventy-six".