2158368000 has 144 divisors (see below), whose sum is σ = 7169338176. Its totient is φ = 575539200.

The previous prime is 2158367999. The next prime is 2158368011. The reversal of 2158368000 is 8638512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84759 + ... + 107241.

Almost surely, 2^2158368000 is an apocalyptic number.

2158368000 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 2158368000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3584669088).

2158368000 is an abundant number, since it is smaller than the sum of its proper divisors (5010970176).

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

2158368000 is an equidigital number, since it uses as much as digits as its factorization.

2158368000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22517 (or 22493 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 2158368000 is about 46458.2393123114. The cubic root of 2158368000 is about 1292.3351729722.

The spelling of 2158368000 in words is "two billion, one hundred fifty-eight million, three hundred sixty-eight thousand".