9130777920 has 448 divisors, whose sum is σ = 35393863680. Its totient is φ = 2197555200.

The previous prime is 9130777891. The next prime is 9130777969. The reversal of 9130777920 is 297770319.

It is a super-2 number, since 2×9130777920² (a number of 21 digits) contains 22 as substring.

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, 18152389 + ... + 18152891.

It is an arithmetic number, because the mean of its divisors is an integer number (79004160).

Almost surely, 2^9130777920 is an apocalyptic number.

9130777920 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 9130777920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17696931840).

9130777920 is an abundant number, since it is smaller than the sum of its proper divisors (26263085760).

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

9130777920 is a wasteful number, since it uses less digits than its factorization.

9130777920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 166698, while the sum is 45.

The square root of 9130777920 is about 95555.1041022927. The cubic root of 9130777920 is about 2090.1105624378.

The spelling of 9130777920 in words is "nine billion, one hundred thirty million, seven hundred seventy-seven thousand, nine hundred twenty".