2158965760 has 176 divisors, whose sum is σ = 6025057920. Its totient is φ = 726958080.

The previous prime is 2158965713. The next prime is 2158965761. The reversal of 2158965760 is 675698512.

It is a super-2 number, since 2×2158965760² = 9322266305704755200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158965761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2114050 + ... + 2115070.

Almost surely, 2^2158965760 is an apocalyptic number.

2158965760 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 2158965760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3012528960).

2158965760 is an abundant number, since it is smaller than the sum of its proper divisors (3866092160).

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

2158965760 is a wasteful number, since it uses less digits than its factorization.

2158965760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 49.

The square root of 2158965760 is about 46464.6721714466. The cubic root of 2158965760 is about 1292.4544660320.

The spelling of 2158965760 in words is "two billion, one hundred fifty-eight million, nine hundred sixty-five thousand, seven hundred sixty".