2154020000 has 120 divisors (see below), whose sum is σ = 5781549312. Its totient is φ = 783200000.

The previous prime is 2154019991. The next prime is 2154020017. The reversal of 2154020000 is 204512.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 215105 + ... + 224895.

Almost surely, 2^2154020000 is an apocalyptic number.

2154020000 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 2154020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2890774656).

2154020000 is an abundant number, since it is smaller than the sum of its proper divisors (3627529312).

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

2154020000 is an equidigital number, since it uses as much as digits as its factorization.

2154020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9832 (or 9809 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 2154020000 is about 46411.4210081958. The cubic root of 2154020000 is about 1291.4667929832.

Adding to 2154020000 its reverse (204512), we get a palindrome (2154224512).

The spelling of 2154020000 in words is "two billion, one hundred fifty-four million, twenty thousand".