1138056480 has 336 divisors, whose sum is σ = 4402569024. Its totient is φ = 275581440.

The previous prime is 1138056467. The next prime is 1138056481. The reversal of 1138056480 is 846508311.

1138056480 is a `hidden beast` number, since 1 + 1 + 3 + 8 + 0 + 5 + 648 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1138056481) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1282597 + ... + 1283483.

It is an arithmetic number, because the mean of its divisors is an integer number (13102884).

Almost surely, 2^1138056480 is an apocalyptic number.

1138056480 is a gapful number since it is divisible by the number (10) 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 1138056480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2201284512).

1138056480 is an abundant number, since it is smaller than the sum of its proper divisors (3264512544).

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

1138056480 is an equidigital number, since it uses as much as digits as its factorization.

1138056480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 908 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 1138056480 is about 33735.0927077428. The cubic root of 1138056480 is about 1044.0499381582.

The spelling of 1138056480 in words is "one billion, one hundred thirty-eight million, fifty-six thousand, four hundred eighty".