1131001092 has 72 divisors (see below), whose sum is σ = 3259967256. Its totient is φ = 327527424.

The previous prime is 1131001019. The next prime is 1131001097. The reversal of 1131001092 is 2901001311.

It can be written as a sum of positive squares in 4 ways, for example, as 427716 + 1130573376 = 654^2 + 33624^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1131001097) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 63123 + ... + 79034.

It is an arithmetic number, because the mean of its divisors is an integer number (45277323).

Almost surely, 2^1131001092 is an apocalyptic number.

1131001092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1131001092 is an abundant number, since it is smaller than the sum of its proper divisors (2128966164).

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

1131001092 is a wasteful number, since it uses less digits than its factorization.

1131001092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142197 (or 142192 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 1131001092 is about 33630.3596769348. The cubic root of 1131001092 is about 1041.8879329031.

The spelling of 1131001092 in words is "one billion, one hundred thirty-one million, one thousand, ninety-two".