1131488845 has 4 divisors (see below), whose sum is σ = 1357786620. Its totient is φ = 905191072.

The previous prime is 1131488833. The next prime is 1131488863. The reversal of 1131488845 is 5488841311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 131537961 + 999950884 = 11469^2 + 31622^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131488845 - 2⁹ = 1131488333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113148880 + ... + 113148889.

It is an arithmetic number, because the mean of its divisors is an integer number (339446655).

Almost surely, 2^1131488845 is an apocalyptic number.

It is an amenable number.

1131488845 is a deficient number, since it is larger than the sum of its proper divisors (226297775).

1131488845 is an equidigital number, since it uses as much as digits as its factorization.

1131488845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226297774.

The product of its digits is 122880, while the sum is 43.

The square root of 1131488845 is about 33637.6105720962. The cubic root of 1131488845 is about 1042.0376854640.

The spelling of 1131488845 in words is "one billion, one hundred thirty-one million, four hundred eighty-eight thousand, eight hundred forty-five".