2722472181 has 64 divisors (see below), whose sum is σ = 4782624000. Its totient is φ = 1508855040.

The previous prime is 2722472177. The next prime is 2722472231. The reversal of 2722472181 is 1812742272.

2722472181 is a `hidden beast` number, since 2 + 7 + 2 + 2 + 472 + 181 = 666.

It is not a de Polignac number, because 2722472181 - 2² = 2722472177 is a prime.

It is a super-2 number, since 2×2722472181² = 14823709552637793522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2722472101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 417615 + ... + 424083.

It is an arithmetic number, because the mean of its divisors is an integer number (74728500).

Almost surely, 2^2722472181 is an apocalyptic number.

It is an amenable number.

2722472181 is a deficient number, since it is larger than the sum of its proper divisors (2060151819).

2722472181 is a wasteful number, since it uses less digits than its factorization.

2722472181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6611 (or 6605 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 2722472181 is about 52177.3148120905. The cubic root of 2722472181 is about 1396.3291898137.

The spelling of 2722472181 in words is "two billion, seven hundred twenty-two million, four hundred seventy-two thousand, one hundred eighty-one".