2651864109 has 8 divisors (see below), whose sum is σ = 3537606240. Its totient is φ = 1767015696.

The previous prime is 2651864099. The next prime is 2651864113. The reversal of 2651864109 is 9014681562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2651864109 - 2⁵ = 2651864077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651864909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216474 + ... + 228395.

It is an arithmetic number, because the mean of its divisors is an integer number (442200780).

Almost surely, 2^2651864109 is an apocalyptic number.

It is an amenable number.

2651864109 is a deficient number, since it is larger than the sum of its proper divisors (885742131).

2651864109 is a wasteful number, since it uses less digits than its factorization.

2651864109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446859.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 2651864109 is about 51496.2533491515. The cubic root of 2651864109 is about 1384.1519062453.

The spelling of 2651864109 in words is "two billion, six hundred fifty-one million, eight hundred sixty-four thousand, one hundred nine".