2431897645 has 8 divisors (see below), whose sum is σ = 2919252600. Its totient is φ = 1944867840.

The previous prime is 2431897619. The next prime is 2431897649. The reversal of 2431897645 is 5467981342.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 56115081 + 2375782564 = 7491^2 + 48742^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2431897645 - 2⁵ = 2431897613 is a prime.

It is a super-3 number, since 3×2431897645³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

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, 64516 + ... + 95005.

It is an arithmetic number, because the mean of its divisors is an integer number (364906575).

Almost surely, 2^2431897645 is an apocalyptic number.

It is an amenable number.

2431897645 is a deficient number, since it is larger than the sum of its proper divisors (487354955).

2431897645 is a wasteful number, since it uses less digits than its factorization.

2431897645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162575.

The product of its digits is 1451520, while the sum is 49.

The square root of 2431897645 is about 49314.2742519851. The cubic root of 2431897645 is about 1344.7712965014.

The spelling of 2431897645 in words is "two billion, four hundred thirty-one million, eight hundred ninety-seven thousand, six hundred forty-five".