2581827963 has 64 divisors (see below), whose sum is σ = 4226826240. Its totient is φ = 1380355200.

The previous prime is 2581827943. The next prime is 2581828003. The reversal of 2581827963 is 3697281852.

It is not a de Polignac number, because 2581827963 - 2¹⁴ = 2581811579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2581827943) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1102648 + ... + 1104986.

It is an arithmetic number, because the mean of its divisors is an integer number (66044160).

Almost surely, 2^2581827963 is an apocalyptic number.

2581827963 is a deficient number, since it is larger than the sum of its proper divisors (1644998277).

2581827963 is a wasteful number, since it uses less digits than its factorization.

2581827963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480.

The product of its digits is 1451520, while the sum is 51.

The square root of 2581827963 is about 50811.6912038952. The cubic root of 2581827963 is about 1371.8578100582.

The spelling of 2581827963 in words is "two billion, five hundred eighty-one million, eight hundred twenty-seven thousand, nine hundred sixty-three".