4921816320 has 108 divisors (see below), whose sum is σ = 17029011636. Its totient is φ = 1312481280.

The previous prime is 4921816307. The next prime is 4921816343. The reversal of 4921816320 is 236181294.

4921816320 is a `hidden beast` number, since 4 + 9 + 2 + 18 + 1 + 632 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 772395264 + 4149421056 = 27792^2 + 64416^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202101 + ... + 225140.

Almost surely, 2^4921816320 is an apocalyptic number.

4921816320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4921816320 is an abundant number, since it is smaller than the sum of its proper divisors (12107195316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4921816320 is a wasteful number, since it uses less digits than its factorization.

4921816320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427268 (or 427251 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 4921816320 is about 70155.6577903735. The cubic root of 4921816320 is about 1701.0162689340.

It can be divided in two parts, 492181 and 6320, that added together give a triangular number (498501 = T₉₉₈).

The spelling of 4921816320 in words is "four billion, nine hundred twenty-one million, eight hundred sixteen thousand, three hundred twenty".