1133978580 has 144 divisors (see below), whose sum is σ = 4011571200. Its totient is φ = 259180992.

The previous prime is 1133978567. The next prime is 1133978581. The reversal of 1133978580 is 858793311.

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 (1133978581) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52557 + ... + 70923.

Almost surely, 2^1133978580 is an apocalyptic number.

1133978580 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 1133978580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2005785600).

1133978580 is an abundant number, since it is smaller than the sum of its proper divisors (2877592620).

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

1133978580 is a wasteful number, since it uses less digits than its factorization.

1133978580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18403 (or 18384 counting only the distinct ones).

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

The square root of 1133978580 is about 33674.5984385857. The cubic root of 1133978580 is about 1042.8014275965.

The spelling of 1133978580 in words is "one billion, one hundred thirty-three million, nine hundred seventy-eight thousand, five hundred eighty".