2158493670 has 96 divisors (see below), whose sum is σ = 6126382080. Its totient is φ = 545292000.

The previous prime is 2158493663. The next prime is 2158493683. The reversal of 2158493670 is 763948512.

2158493670 is a `hidden beast` number, since 2 + 1 + 584 + 9 + 3 + 67 + 0 = 666.

2158493670 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

2158493670 is strictly pandigital in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22795 + ... + 69545.

It is an arithmetic number, because the mean of its divisors is an integer number (63816480).

It is a 1-persistent number, because it is pandigital, but 2⋅2158493670 = 4316987340 is not.

Almost surely, 2^2158493670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2158493670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3063191040).

2158493670 is an abundant number, since it is smaller than the sum of its proper divisors (3967888410).

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

2158493670 is a wasteful number, since it uses less digits than its factorization.

2158493670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46792 (or 46780 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 2158493670 is about 46459.5917976041. The cubic root of 2158493670 is about 1292.3602543623.

The spelling of 2158493670 in words is "two billion, one hundred fifty-eight million, four hundred ninety-three thousand, six hundred seventy".