5630638642 has 4 divisors (see below), whose sum is σ = 8445957966. Its totient is φ = 2815319320.

The previous prime is 5630638631. The next prime is 5630638649. The reversal of 5630638642 is 2468360365.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2468360365 = 5 ⋅493672073.

It can be written as a sum of positive squares in only one way, i.e., 3575920401 + 2054718241 = 59799^2 + 45329^2 .

It is not an unprimeable number, because it can be changed into a prime (5630638649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1407659659 + ... + 1407659662.

Almost surely, 2^5630638642 is an apocalyptic number.

5630638642 is a deficient number, since it is larger than the sum of its proper divisors (2815319324).

5630638642 is a wasteful number, since it uses less digits than its factorization.

5630638642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2815319323.

The product of its (nonzero) digits is 622080, while the sum is 43.

The square root of 5630638642 is about 75037.5815308569. The cubic root of 5630638642 is about 1779.0407070641.

The spelling of 5630638642 in words is "five billion, six hundred thirty million, six hundred thirty-eight thousand, six hundred forty-two".