2431897644 has 24 divisors (see below), whose sum is σ = 6190285248. Its totient is φ = 736938640.

The previous prime is 2431897619. The next prime is 2431897649. The reversal of 2431897644 is 4467981342.

It is a junction number, because it is equal to n+sod(n) for n = 2431897593 and 2431897602.

It is not an unprimeable number, because it can be changed into a prime (2431897649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9211602 + ... + 9211865.

It is an arithmetic number, because the mean of its divisors is an integer number (257928552).

Almost surely, 2^2431897644 is an apocalyptic number.

It is an amenable number.

2431897644 is an abundant number, since it is smaller than the sum of its proper divisors (3758387604).

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

2431897644 is a wasteful number, since it uses less digits than its factorization.

2431897644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18423485 (or 18423483 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The square root of 2431897644 is about 49314.2742418460. The cubic root of 2431897644 is about 1344.7712963170.

The spelling of 2431897644 in words is "two billion, four hundred thirty-one million, eight hundred ninety-seven thousand, six hundred forty-four".