9051489720 has 768 divisors, whose sum is σ = 38610432000. Its totient is φ = 1868977152.

The previous prime is 9051489703. The next prime is 9051489721. The reversal of 9051489720 is 279841509.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9051489721) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 40589529 + ... + 40589751.

It is an arithmetic number, because the mean of its divisors is an integer number (50274000).

Almost surely, 2^9051489720 is an apocalyptic number.

9051489720 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 9051489720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19305216000).

9051489720 is an abundant number, since it is smaller than the sum of its proper divisors (29558942280).

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

9051489720 is a wasteful number, since it uses less digits than its factorization.

9051489720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 9051489720 is about 95139.3174245012. The cubic root of 9051489720 is about 2084.0430575774.

The spelling of 9051489720 in words is "nine billion, fifty-one million, four hundred eighty-nine thousand, seven hundred twenty".