1149981317 has 4 divisors (see below), whose sum is σ = 1159036416. Its totient is φ = 1140926220.

The previous prime is 1149981307. The next prime is 1149981359. The reversal of 1149981317 is 7131899411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1149981317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149981307) 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, 4527359 + ... + 4527612.

It is an arithmetic number, because the mean of its divisors is an integer number (289759104).

Almost surely, 2^1149981317 is an apocalyptic number.

It is an amenable number.

1149981317 is a deficient number, since it is larger than the sum of its proper divisors (9055099).

1149981317 is an equidigital number, since it uses as much as digits as its factorization.

1149981317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9055098.

The product of its digits is 54432, while the sum is 44.

The square root of 1149981317 is about 33911.3744487008. The cubic root of 1149981317 is about 1047.6838795224.

The spelling of 1149981317 in words is "one billion, one hundred forty-nine million, nine hundred eighty-one thousand, three hundred seventeen".