4894541521 has 9 divisors (see below), whose sum is σ = 5014097001. Its totient is φ = 4777776612.

The previous prime is 4894541513. The next prime is 4894541537. The reversal of 4894541521 is 1251454984.

The square root of 4894541521 is 69961.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 4894541521 - 2³ = 4894541513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (4894541921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3007510 + ... + 3009136.

It is an arithmetic number, because the mean of its divisors is an integer number (557121889).

Almost surely, 2^4894541521 is an apocalyptic number.

4894541521 is the 69961-st square number.

4894541521 is the 34981-st centered octagonal number.

It is an amenable number.

4894541521 is a deficient number, since it is larger than the sum of its proper divisors (119555480).

4894541521 is an frugal number, since it uses more digits than its factorization.

4894541521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340 (or 1670 counting only the distinct ones).

The product of its digits is 230400, while the sum is 43.

The cubic root of 4894541521 is about 1697.8683224956.

The spelling of 4894541521 in words is "four billion, eight hundred ninety-four million, five hundred forty-one thousand, five hundred twenty-one".