1149216493 has 4 divisors (see below), whose sum is σ = 1149302880. Its totient is φ = 1149130108.

The previous prime is 1149216491. The next prime is 1149216499. The reversal of 1149216493 is 3946129411.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1149216493 - 2¹ = 1149216491 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 (1149216491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18553 + ... + 51406.

It is an arithmetic number, because the mean of its divisors is an integer number (287325720).

Almost surely, 2^1149216493 is an apocalyptic number.

It is an amenable number.

1149216493 is a deficient number, since it is larger than the sum of its proper divisors (86387).

1149216493 is an equidigital number, since it uses as much as digits as its factorization.

1149216493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86386.

The product of its digits is 46656, while the sum is 40.

The square root of 1149216493 is about 33900.0957668264. The cubic root of 1149216493 is about 1047.4515651739.

The spelling of 1149216493 in words is "one billion, one hundred forty-nine million, two hundred sixteen thousand, four hundred ninety-three".