2581486634 has 16 divisors (see below), whose sum is σ = 3923337600. Its totient is φ = 1273725024.

The previous prime is 2581486619. The next prime is 2581486637. The reversal of 2581486634 is 4366841852.

It is not an unprimeable number, because it can be changed into a prime (2581486637) 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 7 ways as a sum of consecutive naturals, for example, 428189 + ... + 434175.

It is an arithmetic number, because the mean of its divisors is an integer number (245208600).

Almost surely, 2^2581486634 is an apocalyptic number.

2581486634 is a deficient number, since it is larger than the sum of its proper divisors (1341850966).

2581486634 is a wasteful number, since it uses less digits than its factorization.

2581486634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8797.

The product of its digits is 1105920, while the sum is 47.

The square root of 2581486634 is about 50808.3323284675. The cubic root of 2581486634 is about 1371.7973521839.

The spelling of 2581486634 in words is "two billion, five hundred eighty-one million, four hundred eighty-six thousand, six hundred thirty-four".