9538206840 has 256 divisors, whose sum is σ = 32519232000. Its totient is φ = 2517277824.

The previous prime is 9538206829. The next prime is 9538206869. The reversal of 9538206840 is 486028359.

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 63 ways as a sum of consecutive naturals, for example, 9359851 + ... + 9360869.

It is an arithmetic number, because the mean of its divisors is an integer number (127028250).

Almost surely, 2^9538206840 is an apocalyptic number.

9538206840 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 9538206840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16259616000).

9538206840 is an abundant number, since it is smaller than the sum of its proper divisors (22981025160).

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

9538206840 is a wasteful number, since it uses less digits than its factorization.

9538206840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 9538206840 is about 97663.7437332811. The cubic root of 9538206840 is about 2120.7472475594.

The spelling of 9538206840 in words is "nine billion, five hundred thirty-eight million, two hundred six thousand, eight hundred forty".