9800619840 has 448 divisors, whose sum is σ = 38128285440. Its totient is φ = 2350080000.

The previous prime is 9800619821. The next prime is 9800619853. The reversal of 9800619840 is 489160089.

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, 9598530 + ... + 9599550.

It is an arithmetic number, because the mean of its divisors is an integer number (85107780).

Almost surely, 2^9800619840 is an apocalyptic number.

9800619840 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 9800619840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19064142720).

9800619840 is an abundant number, since it is smaller than the sum of its proper divisors (28327665600).

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

9800619840 is a wasteful number, since it uses less digits than its factorization.

9800619840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159 (or 1143 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 9800619840 is about 98998.0799813815. The cubic root of 9800619840 is about 2140.0200772565.

The spelling of 9800619840 in words is "nine billion, eight hundred million, six hundred nineteen thousand, eight hundred forty".