2971485981 has 24 divisors (see below), whose sum is σ = 4783821120. Its totient is φ = 1766330496.

The previous prime is 2971485961. The next prime is 2971486009. The reversal of 2971485981 is 1895841792.

It is a happy number.

2971485981 is a `hidden beast` number, since 2 + 9 + 7 + 1 + 48 + 598 + 1 = 666.

2971485981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2971485981 - 2¹⁷ = 2971354909 is a prime.

It is a super-2 number, since 2×2971485981² = 17659457870559064722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2971485901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 508185 + ... + 513998.

It is an arithmetic number, because the mean of its divisors is an integer number (199325880).

Almost surely, 2^2971485981 is an apocalyptic number.

It is an amenable number.

2971485981 is a deficient number, since it is larger than the sum of its proper divisors (1812335139).

2971485981 is a wasteful number, since it uses less digits than its factorization.

2971485981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022225 (or 1022222 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The square root of 2971485981 is about 54511.3380958494. The cubic root of 2971485981 is about 1437.6656464036.

The spelling of 2971485981 in words is "two billion, nine hundred seventy-one million, four hundred eighty-five thousand, nine hundred eighty-one".