4938521989 has 4 divisors (see below), whose sum is σ = 4946767200. Its totient is φ = 4930276780.

The previous prime is 4938521983. The next prime is 4938522013. The reversal of 4938521989 is 9891258394.

4938521989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4938521989 - 2²³ = 4930133381 is a prime.

It is a super-2 number, since 2×4938521989² = 48777998871673032242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4938521983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4121707 + ... + 4122904.

It is an arithmetic number, because the mean of its divisors is an integer number (1236691800).

Almost surely, 2^4938521989 is an apocalyptic number.

It is an amenable number.

4938521989 is a deficient number, since it is larger than the sum of its proper divisors (8245211).

4938521989 is an equidigital number, since it uses as much as digits as its factorization.

4938521989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8245210.

The product of its digits is 5598720, while the sum is 58.

The square root of 4938521989 is about 70274.6183838803. The cubic root of 4938521989 is about 1702.9386300273.

The spelling of 4938521989 in words is "four billion, nine hundred thirty-eight million, five hundred twenty-one thousand, nine hundred eighty-nine".