2091010688 has 32 divisors (see below), whose sum is σ = 4486126260. Its totient is φ = 965081088.

The previous prime is 2091010687. The next prime is 2091010709. The reversal of 2091010688 is 8860101902.

It can be written as a sum of positive squares in 2 ways, for example, as 1731225664 + 359785024 = 41608^2 + 18968^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (2091010687) 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, 626645 + ... + 629972.

Almost surely, 2^2091010688 is an apocalyptic number.

It is an amenable number.

2091010688 is an abundant number, since it is smaller than the sum of its proper divisors (2395115572).

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

2091010688 is a wasteful number, since it uses less digits than its factorization.

2091010688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256644 (or 1256632 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 2091010688 is about 45727.5703268827. The cubic root of 2091010688 is about 1278.7493252517.

The spelling of 2091010688 in words is "two billion, ninety-one million, ten thousand, six hundred eighty-eight".