2559431642 has 8 divisors (see below), whose sum is σ = 3932785332. Its totient is φ = 1248503200.

The previous prime is 2559431573. The next prime is 2559431647. The reversal of 2559431642 is 2461349552.

It can be written as a sum of positive squares in 2 ways, for example, as 2003368081 + 556063561 = 44759^2 + 23581^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a self number, because there is not a number n which added to its sum of digits gives 2559431642.

It is not an unprimeable number, because it can be changed into a prime (2559431647) 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 3 ways as a sum of consecutive naturals, for example, 15606209 + ... + 15606372.

Almost surely, 2^2559431642 is an apocalyptic number.

2559431642 is a deficient number, since it is larger than the sum of its proper divisors (1373353690).

2559431642 is a wasteful number, since it uses less digits than its factorization.

2559431642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31212624.

The product of its digits is 259200, while the sum is 41.

The square root of 2559431642 is about 50590.8256702735. The cubic root of 2559431642 is about 1367.8795125037.

The spelling of 2559431642 in words is "two billion, five hundred fifty-nine million, four hundred thirty-one thousand, six hundred forty-two".