2646468980 has 12 divisors (see below), whose sum is σ = 5557584900. Its totient is φ = 1058587584.

The previous prime is 2646468967. The next prime is 2646468983. The reversal of 2646468980 is 898646462.

It can be written as a sum of positive squares in 2 ways, for example, as 507961444 + 2138507536 = 22538^2 + 46244^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646468983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66161705 + ... + 66161744.

It is an arithmetic number, because the mean of its divisors is an integer number (463132075).

Almost surely, 2^2646468980 is an apocalyptic number.

2646468980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2646468980 is an abundant number, since it is smaller than the sum of its proper divisors (2911115920).

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

2646468980 is a wasteful number, since it uses less digits than its factorization.

2646468980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132323458 (or 132323456 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 53.

The square root of 2646468980 is about 51443.8429746457. The cubic root of 2646468980 is about 1383.2125986788.

The spelling of 2646468980 in words is "two billion, six hundred forty-six million, four hundred sixty-eight thousand, nine hundred eighty".