4431653642 has 8 divisors (see below), whose sum is σ = 7158825156. Its totient is φ = 2045378592.

The previous prime is 4431653587. The next prime is 4431653729. The reversal of 4431653642 is 2463561344.

It can be written as a sum of positive squares in 2 ways, for example, as 3701627281 + 730026361 = 60841^2 + 27019^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 4431653596 and 4431653605.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85224083 + ... + 85224134.

Almost surely, 2^4431653642 is an apocalyptic number.

4431653642 is a deficient number, since it is larger than the sum of its proper divisors (2727171514).

4431653642 is a wasteful number, since it uses less digits than its factorization.

4431653642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170448232.

The product of its digits is 207360, while the sum is 38.

The square root of 4431653642 is about 66570.6665281338. Note that the first 3 decimals coincide. The cubic root of 4431653642 is about 1642.5626258278.

The spelling of 4431653642 in words is "four billion, four hundred thirty-one million, six hundred fifty-three thousand, six hundred forty-two".