2097990000 has 150 divisors (see below), whose sum is σ = 7337288816. Its totient is φ = 559440000.

The previous prime is 2097989989. The next prime is 2097990023. The reversal of 2097990000 is 997902.

It is a tau number, because it is divible by the number of its divisors (150).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 78345 + ... + 101655.

Almost surely, 2^2097990000 is an apocalyptic number.

2097990000 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 2097990000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3668644408).

2097990000 is an abundant number, since it is smaller than the sum of its proper divisors (5239298816).

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

2097990000 is a wasteful number, since it uses less digits than its factorization.

2097990000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23345 (or 23321 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 2097990000 is about 45803.8208013262. The cubic root of 2097990000 is about 1280.1704688326.

The spelling of 2097990000 in words is "two billion, ninety-seven million, nine hundred ninety thousand".