2634340261 has 16 divisors (see below), whose sum is σ = 3087040000. Its totient is φ = 2200948848.

The previous prime is 2634340243. The next prime is 2634340279. The reversal of 2634340261 is 1620434362.

2634340261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2634340243) and next prime (2634340279).

It is not a de Polignac number, because 2634340261 - 2⁵ = 2634340229 is a prime.

It is a super-2 number, since 2×2634340261² = 13879497221451096242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2634340211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141430 + ... + 158968.

It is an arithmetic number, because the mean of its divisors is an integer number (192940000).

Almost surely, 2^2634340261 is an apocalyptic number.

It is an amenable number.

2634340261 is a deficient number, since it is larger than the sum of its proper divisors (452699739).

2634340261 is a wasteful number, since it uses less digits than its factorization.

2634340261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18088.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 2634340261 is about 51325.8245038499. The cubic root of 2634340261 is about 1381.0962830077.

The spelling of 2634340261 in words is "two billion, six hundred thirty-four million, three hundred forty thousand, two hundred sixty-one".