2651834881 has 4 divisors (see below), whose sum is σ = 2723506132. Its totient is φ = 2580163632.

The previous prime is 2651834873. The next prime is 2651834903. The reversal of 2651834881 is 1884381562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2362834881 + 289000000 = 48609^2 + 17000^2 .

It is a cyclic number.

It is not a de Polignac number, because 2651834881 - 2³ = 2651834873 is a prime.

It is a super-2 number, since 2×2651834881² = 14064456472176568322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2651834681) 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, 35835570 + ... + 35835643.

It is an arithmetic number, because the mean of its divisors is an integer number (680876533).

Almost surely, 2^2651834881 is an apocalyptic number.

It is an amenable number.

2651834881 is a deficient number, since it is larger than the sum of its proper divisors (71671251).

2651834881 is an equidigital number, since it uses as much as digits as its factorization.

2651834881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71671250.

The product of its digits is 368640, while the sum is 46.

The square root of 2651834881 is about 51495.9695607336. The cubic root of 2651834881 is about 1384.1468209997.

The spelling of 2651834881 in words is "two billion, six hundred fifty-one million, eight hundred thirty-four thousand, eight hundred eighty-one".