9421663500 has 384 divisors, whose sum is σ = 32855397120. Its totient is φ = 2322432000.

The previous prime is 9421663469. The next prime is 9421663507. The reversal of 9421663500 is 53661249.

It is a happy number.

9421663500 is a `hidden beast` number, since 9 + 4 + 2 + 16 + 635 + 0 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (9421663507) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13999164 + ... + 13999836.

It is an arithmetic number, because the mean of its divisors is an integer number (85560930).

Almost surely, 2^9421663500 is an apocalyptic number.

9421663500 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9421663500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16427698560).

9421663500 is an abundant number, since it is smaller than the sum of its proper divisors (23433733620).

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

9421663500 is a wasteful number, since it uses less digits than its factorization.

9421663500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 9421663500 is about 97065.2538244247. The cubic root of 9421663500 is about 2112.0743210546.

The spelling of 9421663500 in words is "nine billion, four hundred twenty-one million, six hundred sixty-three thousand, five hundred".