1149315641 has 4 divisors (see below), whose sum is σ = 1149494400. Its totient is φ = 1149136884.

The previous prime is 1149315619. The next prime is 1149315659. The reversal of 1149315641 is 1465139411.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1465139411 = 5881 ⋅249131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1149315641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1149315611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79361 + ... + 92718.

It is an arithmetic number, because the mean of its divisors is an integer number (287373600).

Almost surely, 2^1149315641 is an apocalyptic number.

It is an amenable number.

1149315641 is a deficient number, since it is larger than the sum of its proper divisors (178759).

1149315641 is an equidigital number, since it uses as much as digits as its factorization.

1149315641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178758.

The product of its digits is 12960, while the sum is 35.

The square root of 1149315641 is about 33901.5580910376. The cubic root of 1149315641 is about 1047.4816870706.

The spelling of 1149315641 in words is "one billion, one hundred forty-nine million, three hundred fifteen thousand, six hundred forty-one".