8653921920 has 192 divisors, whose sum is σ = 34152243840. Its totient is φ = 1978030080.

The previous prime is 8653921889. The next prime is 8653921921. The reversal of 8653921920 is 291293568.

8653921920 is a `hidden beast` number, since 8 + 6 + 539 + 21 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (8653921921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66996 + ... + 147635.

It is an arithmetic number, because the mean of its divisors is an integer number (177876270).

Almost surely, 2^8653921920 is an apocalyptic number.

8653921920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8653921920 is an abundant number, since it is smaller than the sum of its proper divisors (25498321920).

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

8653921920 is a wasteful number, since it uses less digits than its factorization.

8653921920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214663 (or 214648 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 8653921920 is about 93026.4581718556. The cubic root of 8653921920 is about 2053.0726810685.

The spelling of 8653921920 in words is "eight billion, six hundred fifty-three million, nine hundred twenty-one thousand, nine hundred twenty".