2649854261 has 16 divisors (see below), whose sum is σ = 2735308800. Its totient is φ = 2566090800.

The previous prime is 2649854257. The next prime is 2649854279. The reversal of 2649854261 is 1624589462.

It is a cyclic number.

It is not a de Polignac number, because 2649854261 - 2² = 2649854257 is a prime.

It is a super-2 number, since 2×2649854261² = 14043455209079712242, 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 (2649854461) 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 15 ways as a sum of consecutive naturals, for example, 1182380 + ... + 1184618.

It is an arithmetic number, because the mean of its divisors is an integer number (170956800).

Almost surely, 2^2649854261 is an apocalyptic number.

It is an amenable number.

2649854261 is a deficient number, since it is larger than the sum of its proper divisors (85454539).

2649854261 is a wasteful number, since it uses less digits than its factorization.

2649854261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600.

The product of its digits is 829440, while the sum is 47.

The square root of 2649854261 is about 51476.7351431693. The cubic root of 2649854261 is about 1383.8021349232.

The spelling of 2649854261 in words is "two billion, six hundred forty-nine million, eight hundred fifty-four thousand, two hundred sixty-one".