2641551644 has 12 divisors (see below), whose sum is σ = 4625568024. Its totient is φ = 1319960784.

The previous prime is 2641551637. The next prime is 2641551673. The reversal of 2641551644 is 4461551462.

It is a happy number.

2641551644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2641551598 and 2641551607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196439 + ... + 209454.

It is an arithmetic number, because the mean of its divisors is an integer number (385464002).

Almost surely, 2^2641551644 is an apocalyptic number.

It is an amenable number.

2641551644 is a deficient number, since it is larger than the sum of its proper divisors (1984016380).

2641551644 is a wasteful number, since it uses less digits than its factorization.

2641551644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407524 (or 407522 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 2641551644 is about 51396.0275118613. The cubic root of 2641551644 is about 1382.3553635964.

The spelling of 2641551644 in words is "two billion, six hundred forty-one million, five hundred fifty-one thousand, six hundred forty-four".