4642648837 has 2 divisors, whose sum is σ = 4642648838. Its totient is φ = 4642648836.

The previous prime is 4642648793. The next prime is 4642648909. The reversal of 4642648837 is 7388462464.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4537504321 + 105144516 = 67361^2 + 10254^2 .

It is a cyclic number.

It is not a de Polignac number, because 4642648837 - 2¹⁹ = 4642124549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4642658837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2321324418 + 2321324419.

It is an arithmetic number, because the mean of its divisors is an integer number (2321324419).

Almost surely, 2^4642648837 is an apocalyptic number.

It is an amenable number.

4642648837 is a deficient number, since it is larger than the sum of its proper divisors (1).

4642648837 is an equidigital number, since it uses as much as digits as its factorization.

4642648837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6193152, while the sum is 52.

The square root of 4642648837 is about 68136.9858226793. The cubic root of 4642648837 is about 1668.2275093569.

The spelling of 4642648837 in words is "four billion, six hundred forty-two million, six hundred forty-eight thousand, eight hundred thirty-seven".