1131877472 has 96 divisors (see below), whose sum is σ = 2551336704. Its totient is φ = 489280000.

The previous prime is 1131877469. The next prime is 1131877499. The reversal of 1131877472 is 2747781311.

It is a super-2 number, since 2×1131877472² = 2562293223242221568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2031818 + ... + 2032374.

It is an arithmetic number, because the mean of its divisors is an integer number (26576424).

Almost surely, 2^1131877472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131877472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1275668352).

1131877472 is an abundant number, since it is smaller than the sum of its proper divisors (1419459232).

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

1131877472 is a wasteful number, since it uses less digits than its factorization.

1131877472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852 (or 844 counting only the distinct ones).

The product of its digits is 65856, while the sum is 41.

The square root of 1131877472 is about 33643.3867498503. The cubic root of 1131877472 is about 1042.1569730223.

The spelling of 1131877472 in words is "one billion, one hundred thirty-one million, eight hundred seventy-seven thousand, four hundred seventy-two".