2581896534 has 48 divisors (see below), whose sum is σ = 6011334000. Its totient is φ = 737135616.

The previous prime is 2581896517. The next prime is 2581896599. The reversal of 2581896534 is 4356981852.

It is a Curzon number.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 553042 + ... + 557690.

It is an arithmetic number, because the mean of its divisors is an integer number (125236125).

Almost surely, 2^2581896534 is an apocalyptic number.

2581896534 is an abundant number, since it is smaller than the sum of its proper divisors (3429437466).

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

2581896534 is a wasteful number, since it uses less digits than its factorization.

2581896534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6557 (or 6550 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 51.

The square root of 2581896534 is about 50812.3659555428. The cubic root of 2581896534 is about 1371.8699550488.

The spelling of 2581896534 in words is "two billion, five hundred eighty-one million, eight hundred ninety-six thousand, five hundred thirty-four".