2479143681 has 27 divisors (see below), whose sum is σ = 4167393633. Its totient is φ = 1416056040.

The previous prime is 2479143673. The next prime is 2479143701. The reversal of 2479143681 is 1863419742.

The square root of 2479143681 is 49791.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2479143681 - 2³ = 2479143673 is a prime.

It is a super-2 number, since 2×2479143681² = 12292306782084459522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2479143661) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1044426 + ... + 1046796.

Almost surely, 2^2479143681 is an apocalyptic number.

2479143681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2479143681 is the 49791-st square number.

2479143681 is the 24896-th centered octagonal number.

It is an amenable number.

2479143681 is a deficient number, since it is larger than the sum of its proper divisors (1688249952).

2479143681 is an frugal number, since it uses more digits than its factorization.

2479143681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4762 (or 2381 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The cubic root of 2479143681 is about 1353.4240799897.

The spelling of 2479143681 in words is "two billion, four hundred seventy-nine million, one hundred forty-three thousand, six hundred eighty-one".