9164638620 has 48 divisors (see below), whose sum is σ = 28512210720. Its totient is φ = 2443903488.

The previous prime is 9164638583. The next prime is 9164638649. The reversal of 9164638620 is 268364619.

9164638620 is a `hidden beast` number, since 9 + 1 + 6 + 4 + 638 + 6 + 2 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8485237 + ... + 8486316.

It is an arithmetic number, because the mean of its divisors is an integer number (594004390).

Almost surely, 2^9164638620 is an apocalyptic number.

9164638620 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9164638620 is an abundant number, since it is smaller than the sum of its proper divisors (19347572100).

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

9164638620 is a wasteful number, since it uses less digits than its factorization.

9164638620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16971571 (or 16971563 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 9164638620 is about 95732.1190614728. The cubic root of 9164638620 is about 2092.6910399699.

The spelling of 9164638620 in words is "nine billion, one hundred sixty-four million, six hundred thirty-eight thousand, six hundred twenty".