1149240465 has 24 divisors (see below), whose sum is σ = 2004250560. Its totient is φ = 609164064.

The previous prime is 1149240439. The next prime is 1149240487. The reversal of 1149240465 is 5640429411.

It is not a de Polignac number, because 1149240465 - 2⁹ = 1149239953 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71005 + ... + 85674.

It is an arithmetic number, because the mean of its divisors is an integer number (83510440).

Almost surely, 2^1149240465 is an apocalyptic number.

1149240465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1149240465 is a deficient number, since it is larger than the sum of its proper divisors (855010095).

1149240465 is a wasteful number, since it uses less digits than its factorization.

1149240465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156853 (or 156850 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1149240465 is about 33900.4493333053. The cubic root of 1149240465 is about 1047.4588482038.

Adding to 1149240465 its reverse (5640429411), we get a palindrome (6789669876).

The spelling of 1149240465 in words is "one billion, one hundred forty-nine million, two hundred forty thousand, four hundred sixty-five".