2646438620 has 48 divisors (see below), whose sum is σ = 6725073600. Its totient is φ = 853976064.

The previous prime is 2646438607. The next prime is 2646438631. The reversal of 2646438620 is 268346462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553595 + ... + 558354.

It is an arithmetic number, because the mean of its divisors is an integer number (140105700).

Almost surely, 2^2646438620 is an apocalyptic number.

2646438620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2646438620 is an abundant number, since it is smaller than the sum of its proper divisors (4078634980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2646438620 is a wasteful number, since it uses less digits than its factorization.

2646438620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111982 (or 1111980 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 41.

The square root of 2646438620 is about 51443.5478947555. The cubic root of 2646438620 is about 1383.2073093045.

The spelling of 2646438620 in words is "two billion, six hundred forty-six million, four hundred thirty-eight thousand, six hundred twenty".