6632191642 has 24 divisors (see below), whose sum is σ = 10507566996. Its totient is φ = 3139133184.

The previous prime is 6632191637. The next prime is 6632191673. The reversal of 6632191642 is 2461912366.

It can be written as a sum of positive squares in 2 ways, for example, as 6492975241 + 139216401 = 80579^2 + 11799^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6632191595 and 6632191604.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1222528 + ... + 1227940.

Almost surely, 2^6632191642 is an apocalyptic number.

6632191642 is a deficient number, since it is larger than the sum of its proper divisors (3875375354).

6632191642 is a wasteful number, since it uses less digits than its factorization.

6632191642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7150 (or 7131 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 6632191642 is about 81438.2689035075. The cubic root of 6632191642 is about 1878.8222253745.

The spelling of 6632191642 in words is "six billion, six hundred thirty-two million, one hundred ninety-one thousand, six hundred forty-two".