2185142976 has 84 divisors (see below), whose sum is σ = 6366097504. Its totient is φ = 716428800.

The previous prime is 2185142951. The next prime is 2185142977. The reversal of 2185142976 is 6792415812.

2185142976 is a `hidden beast` number, since 218 + 5 + 1 + 429 + 7 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (2185142977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4041 + ... + 66231.

Almost surely, 2^2185142976 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 2185142976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3183048752).

2185142976 is an abundant number, since it is smaller than the sum of its proper divisors (4180954528).

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

2185142976 is a wasteful number, since it uses less digits than its factorization.

2185142976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62270 (or 62257 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 2185142976 is about 46745.5128969616. The cubic root of 2185142976 is about 1297.6571166392.

It can be divided in two parts, 2185 and 142976, that added together give a square (145161 = 381²).

The spelling of 2185142976 in words is "two billion, one hundred eighty-five million, one hundred forty-two thousand, nine hundred seventy-six".