2091650000 has 120 divisors (see below), whose sum is σ = 5527333728. Its totient is φ = 760400000.

The previous prime is 2091649999. The next prime is 2091650051. The reversal of 2091650000 is 561902.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

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, 548099 + ... + 551901.

Almost surely, 2^2091650000 is an apocalyptic number.

2091650000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2091650000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2763666864).

2091650000 is an abundant number, since it is smaller than the sum of its proper divisors (3435683728).

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

2091650000 is an equidigital number, since it uses as much as digits as its factorization.

2091650000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847 (or 3821 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 2091650000 is about 45734.5602362152. The cubic root of 2091650000 is about 1278.8796348814.

The spelling of 2091650000 in words is "two billion, ninety-one million, six hundred fifty thousand".