2158498560 has 144 divisors (see below), whose sum is σ = 6912186624. Its totient is φ = 574058496.

The previous prime is 2158498523. The next prime is 2158498567. The reversal of 2158498560 is 658948512.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (2158498567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2622309 + ... + 2623131.

It is an arithmetic number, because the mean of its divisors is an integer number (48001296).

Almost surely, 2^2158498560 is an apocalyptic number.

2158498560 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 2158498560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3456093312).

2158498560 is an abundant number, since it is smaller than the sum of its proper divisors (4753688064).

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

2158498560 is an equidigital number, since it uses as much as digits as its factorization.

2158498560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530 (or 1516 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The square root of 2158498560 is about 46459.6444239514. The cubic root of 2158498560 is about 1292.3612302955.

The spelling of 2158498560 in words is "two billion, one hundred fifty-eight million, four hundred ninety-eight thousand, five hundred sixty".