2649470872 has 8 divisors (see below), whose sum is σ = 4967757900. Its totient is φ = 1324735432.

The previous prime is 2649470869. The next prime is 2649470891. The reversal of 2649470872 is 2780749462.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165591922 + ... + 165591937.

Almost surely, 2^2649470872 is an apocalyptic number.

It is an amenable number.

2649470872 is a deficient number, since it is larger than the sum of its proper divisors (2318287028).

2649470872 is a wasteful number, since it uses less digits than its factorization.

2649470872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331183865 (or 331183861 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The square root of 2649470872 is about 51473.0111029071. The cubic root of 2649470872 is about 1383.7353941326.

The spelling of 2649470872 in words is "two billion, six hundred forty-nine million, four hundred seventy thousand, eight hundred seventy-two".