2157795486 has 96 divisors (see below), whose sum is σ = 6016997376. Its totient is φ = 542376000.

The previous prime is 2157795481. The next prime is 2157795503. The reversal of 2157795486 is 6845977512.

2157795486 is a `hidden beast` number, since 2 + 1 + 5 + 77 + 95 + 486 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157795481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17856 + ... + 68076.

It is an arithmetic number, because the mean of its divisors is an integer number (62677056).

Almost surely, 2^2157795486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157795486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3008498688).

2157795486 is an abundant number, since it is smaller than the sum of its proper divisors (3859201890).

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

2157795486 is a wasteful number, since it uses less digits than its factorization.

2157795486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50278 (or 50275 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 54.

The square root of 2157795486 is about 46452.0773055415. The cubic root of 2157795486 is about 1292.2208975247.

The spelling of 2157795486 in words is "two billion, one hundred fifty-seven million, seven hundred ninety-five thousand, four hundred eighty-six".