1131939745 has 12 divisors (see below), whose sum is σ = 1406786940. Its totient is φ = 874322624.

The previous prime is 1131939719. The next prime is 1131939751. The reversal of 1131939745 is 5479391311.

It can be written as a sum of positive squares in 6 ways, for example, as 167029776 + 964909969 = 12924^2 + 31063^2 .

It is not a de Polignac number, because 1131939745 - 2⁹ = 1131939233 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 130390 + ... + 138799.

It is an arithmetic number, because the mean of its divisors is an integer number (117232245).

Almost surely, 2^1131939745 is an apocalyptic number.

It is an amenable number.

1131939745 is a deficient number, since it is larger than the sum of its proper divisors (274847195).

1131939745 is an equidigital number, since it uses as much as digits as its factorization.

1131939745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269252 (or 269223 counting only the distinct ones).

The product of its digits is 102060, while the sum is 43.

The square root of 1131939745 is about 33644.3122236137. The cubic root of 1131939745 is about 1042.1760849411.

The spelling of 1131939745 in words is "one billion, one hundred thirty-one million, nine hundred thirty-nine thousand, seven hundred forty-five".