2581142380 has 24 divisors (see below), whose sum is σ = 5425247520. Its totient is φ = 1031533440.

The previous prime is 2581142359. The next prime is 2581142393. The reversal of 2581142380 is 832411852.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34576 + ... + 79735.

It is an arithmetic number, because the mean of its divisors is an integer number (226051980).

Almost surely, 2^2581142380 is an apocalyptic number.

2581142380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2581142380 is an abundant number, since it is smaller than the sum of its proper divisors (2844105140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2581142380 is a wasteful number, since it uses less digits than its factorization.

2581142380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115449 (or 115447 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 2581142380 is about 50804.9444444141. The cubic root of 2581142380 is about 1371.7363708211.

The spelling of 2581142380 in words is "two billion, five hundred eighty-one million, one hundred forty-two thousand, three hundred eighty".