1131641292 has 48 divisors (see below), whose sum is σ = 2798208000. Its totient is φ = 354951360.

The previous prime is 1131641249. The next prime is 1131641293. The reversal of 1131641292 is 2921461311.

It is a super-2 number, since 2×1131641292² = 2561224027518858528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131641293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17317 + ... + 50627.

It is an arithmetic number, because the mean of its divisors is an integer number (58296000).

Almost surely, 2^1131641292 is an apocalyptic number.

1131641292 is a gapful number since it is divisible by the number (12) 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 1131641292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399104000).

1131641292 is an abundant number, since it is smaller than the sum of its proper divisors (1666566708).

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

1131641292 is a wasteful number, since it uses less digits than its factorization.

1131641292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33486 (or 33484 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 1131641292 is about 33639.8765158257. The cubic root of 1131641292 is about 1042.0844817378.

The spelling of 1131641292 in words is "one billion, one hundred thirty-one million, six hundred forty-one thousand, two hundred ninety-two".