1131875980 has 96 divisors (see below), whose sum is σ = 2682408960. Its totient is φ = 398638080.

The previous prime is 1131875939. The next prime is 1131875989. The reversal of 1131875980 is 895781311.

It is a super-2 number, since 2×1131875980² = 2562286468201920800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1131875989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 535125 + ... + 537235.

It is an arithmetic number, because the mean of its divisors is an integer number (27941760).

Almost surely, 2^1131875980 is an apocalyptic number.

1131875980 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 1131875980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1341204480).

1131875980 is an abundant number, since it is smaller than the sum of its proper divisors (1550532980).

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

1131875980 is a wasteful number, since it uses less digits than its factorization.

1131875980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239 (or 2237 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 43.

The square root of 1131875980 is about 33643.3645760943. The cubic root of 1131875980 is about 1042.1565151109.

The spelling of 1131875980 in words is "one billion, one hundred thirty-one million, eight hundred seventy-five thousand, nine hundred eighty".