2461771989 has 24 divisors (see below), whose sum is σ = 3774639960. Its totient is φ = 1540712448.

The previous prime is 2461771957. The next prime is 2461772017. The reversal of 2461771989 is 9891771642.

2461771989 is a `hidden beast` number, since 2 + 4 + 617 + 7 + 19 + 8 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1523575089 + 938196900 = 39033^2 + 30630^2 .

It is not a de Polignac number, because 2461771989 - 2⁵ = 2461771957 is a prime.

It is a super-2 number, since 2×2461771989² = 12120642651650032242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2461771909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40477 + ... + 81005.

It is an arithmetic number, because the mean of its divisors is an integer number (157276665).

Almost surely, 2^2461771989 is an apocalyptic number.

It is an amenable number.

2461771989 is a deficient number, since it is larger than the sum of its proper divisors (1312867971).

2461771989 is a wasteful number, since it uses less digits than its factorization.

2461771989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40949 (or 40946 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 2461771989 is about 49616.2472281006. The cubic root of 2461771989 is about 1350.2554594755.

The spelling of 2461771989 in words is "two billion, four hundred sixty-one million, seven hundred seventy-one thousand, nine hundred eighty-nine".