2091597084 has 72 divisors (see below), whose sum is σ = 5348401968. Its totient is φ = 689160960.

The previous prime is 2091597061. The next prime is 2091597103. The reversal of 2091597084 is 4807951902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1365399 + ... + 1366929.

Almost surely, 2^2091597084 is an apocalyptic number.

It is an amenable number.

2091597084 is an abundant number, since it is smaller than the sum of its proper divisors (3256804884).

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

2091597084 is a wasteful number, since it uses less digits than its factorization.

2091597084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 2091597084 is about 45733.9817203794. The cubic root of 2091597084 is about 1278.8688501317.

The spelling of 2091597084 in words is "two billion, ninety-one million, five hundred ninety-seven thousand, eighty-four".