4536821648 has 10 divisors (see below), whose sum is σ = 8790091974. Its totient is φ = 2268410816.

The previous prime is 4536821647. The next prime is 4536821651. The reversal of 4536821648 is 8461286354.

It can be written as a sum of positive squares in only one way, i.e., 2945449984 + 1591371664 = 54272^2 + 39892^2 .

It is a super-2 number, since 2×4536821648² = 41165501331522871808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4536821647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141775661 + ... + 141775692.

Almost surely, 2^4536821648 is an apocalyptic number.

It is an amenable number.

4536821648 is a deficient number, since it is larger than the sum of its proper divisors (4253270326).

4536821648 is a wasteful number, since it uses less digits than its factorization.

4536821648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283551361 (or 283551355 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 47.

The square root of 4536821648 is about 67355.9325375278. The cubic root of 4536821648 is about 1655.4544497296.

The spelling of 4536821648 in words is "four billion, five hundred thirty-six million, eight hundred twenty-one thousand, six hundred forty-eight".