4742643639 has 8 divisors (see below), whose sum is σ = 6335950320. Its totient is φ = 3155549696.

The previous prime is 4742643569. The next prime is 4742643641. The reversal of 4742643639 is 9363462474.

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

It is a cyclic number.

It is not a de Polignac number, because 4742643639 - 2¹¹ = 4742641591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4742643649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1551402 + ... + 1554455.

It is an arithmetic number, because the mean of its divisors is an integer number (791993790).

Almost surely, 2^4742643639 is an apocalyptic number.

4742643639 is a deficient number, since it is larger than the sum of its proper divisors (1593306681).

4742643639 is a wasteful number, since it uses less digits than its factorization.

4742643639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106369.

The product of its digits is 2612736, while the sum is 48.

The square root of 4742643639 is about 68866.8544293988. The cubic root of 4742643639 is about 1680.1194688992.

The spelling of 4742643639 in words is "four billion, seven hundred forty-two million, six hundred forty-three thousand, six hundred thirty-nine".