1144115464 has 16 divisors (see below), whose sum is σ = 2145589200. Its totient is φ = 571958352.

The previous prime is 1144115459. The next prime is 1144115477. The reversal of 1144115464 is 4645114411.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64579 + ... + 80365.

It is an arithmetic number, because the mean of its divisors is an integer number (134099325).

Almost surely, 2^1144115464 is an apocalyptic number.

It is an amenable number.

1144115464 is a deficient number, since it is larger than the sum of its proper divisors (1001473736).

1144115464 is a wasteful number, since it uses less digits than its factorization.

1144115464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24852 (or 24848 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 1144115464 is about 33824.7758898710. The cubic root of 1144115464 is about 1045.8994915533.

Adding to 1144115464 its reverse (4645114411), we get a palindrome (5789229875).

The spelling of 1144115464 in words is "one billion, one hundred forty-four million, one hundred fifteen thousand, four hundred sixty-four".