9539418420 has 288 divisors, whose sum is σ = 35833045248. Its totient is φ = 2004258816.

The previous prime is 9539418397. The next prime is 9539418433. The reversal of 9539418420 is 248149359.

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 95 ways as a sum of consecutive naturals, for example, 915882 + ... + 926238.

It is an arithmetic number, because the mean of its divisors is an integer number (124420296).

Almost surely, 2^9539418420 is an apocalyptic number.

9539418420 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 9539418420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17916522624).

9539418420 is an abundant number, since it is smaller than the sum of its proper divisors (26293626828).

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

9539418420 is a wasteful number, since it uses less digits than its factorization.

9539418420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10439 (or 10434 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 9539418420 is about 97669.9463499392. The cubic root of 9539418420 is about 2120.8370389359.

It can be divided in two parts, 953941 and 8420, that added together give a square (962361 = 981²).

The spelling of 9539418420 in words is "nine billion, five hundred thirty-nine million, four hundred eighteen thousand, four hundred twenty".