2641689988 has 24 divisors (see below), whose sum is σ = 5284731200. Its totient is φ = 1131863328.

The previous prime is 2641689979. The next prime is 2641690049. The reversal of 2641689988 is 8899861462.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127843 + ... + 147061.

Almost surely, 2^2641689988 is an apocalyptic number.

2641689988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2641689988 is an abundant number, since it is smaller than the sum of its proper divisors (2643041212).

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

2641689988 is a wasteful number, since it uses less digits than its factorization.

2641689988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24139 (or 24137 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 61.

The square root of 2641689988 is about 51397.3733570112. The cubic root of 2641689988 is about 1382.3794955282.

The spelling of 2641689988 in words is "two billion, six hundred forty-one million, six hundred eighty-nine thousand, nine hundred eighty-eight".