2158645248 has 208 divisors, whose sum is σ = 6487272000. Its totient is φ = 709263360.

The previous prime is 2158645219. The next prime is 2158645253. The reversal of 2158645248 is 8425468512.

2158645248 is a `hidden beast` number, since 2 + 1 + 586 + 45 + 24 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

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, 14487478 + ... + 14487626.

Almost surely, 2^2158645248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2158645248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3243636000).

2158645248 is an abundant number, since it is smaller than the sum of its proper divisors (4328626752).

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

2158645248 is a wasteful number, since it uses less digits than its factorization.

2158645248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 285 counting only the distinct ones).

The product of its digits is 614400, while the sum is 45.

The square root of 2158645248 is about 46461.2230575132. The cubic root of 2158645248 is about 1292.3905052112.

The spelling of 2158645248 in words is "two billion, one hundred fifty-eight million, six hundred forty-five thousand, two hundred forty-eight".