1131601448 has 16 divisors (see below), whose sum is σ = 2122212960. Its totient is φ = 565678000.

The previous prime is 1131601441. The next prime is 1131601501. The reversal of 1131601448 is 8441061311.

It is a self number, because there is not a number n which added to its sum of digits gives 1131601448.

It is not an unprimeable number, because it can be changed into a prime (1131601441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32693 + ... + 57723.

It is an arithmetic number, because the mean of its divisors is an integer number (132638310).

Almost surely, 2^1131601448 is an apocalyptic number.

It is an amenable number.

1131601448 is a deficient number, since it is larger than the sum of its proper divisors (990611512).

1131601448 is a wasteful number, since it uses less digits than its factorization.

1131601448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30688 (or 30684 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1131601448 is about 33639.2842967861. The cubic root of 1131601448 is about 1042.0722513306.

Adding to 1131601448 its reverse (8441061311), we get a palindrome (9572662759).

The spelling of 1131601448 in words is "one billion, one hundred thirty-one million, six hundred one thousand, four hundred forty-eight".