2181275298 has 16 divisors (see below), whose sum is σ = 4847278560. Its totient is φ = 727091748.

The previous prime is 2181275267. The next prime is 2181275329. The reversal of 2181275298 is 8925721812.

2181275298 is a `hidden beast` number, since 21 + 81 + 27 + 529 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (2181275267) and next prime (2181275329).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20196940 + ... + 20197047.

It is an arithmetic number, because the mean of its divisors is an integer number (302954910).

Almost surely, 2^2181275298 is an apocalyptic number.

2181275298 is an abundant number, since it is smaller than the sum of its proper divisors (2666003262).

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

2181275298 is a wasteful number, since it uses less digits than its factorization.

2181275298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40393998 (or 40393992 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 2181275298 is about 46704.1250640669. The cubic root of 2181275298 is about 1296.8910517493.

The spelling of 2181275298 in words is "two billion, one hundred eighty-one million, two hundred seventy-five thousand, two hundred ninety-eight".