1144663500 has 96 divisors (see below), whose sum is σ = 3364320960. Its totient is φ = 302400000.

The previous prime is 1144663463. The next prime is 1144663529. The reversal of 1144663500 is 53664411.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160000 + ... + 167000.

It is an arithmetic number, because the mean of its divisors is an integer number (35045010).

Almost surely, 2^1144663500 is an apocalyptic number.

1144663500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1144663500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682160480).

1144663500 is an abundant number, since it is smaller than the sum of its proper divisors (2219657460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144663500 is a wasteful number, since it uses less digits than its factorization.

1144663500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7132 (or 7120 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1144663500 is about 33832.8760231819. The cubic root of 1144663500 is about 1046.0664616118.

The spelling of 1144663500 in words is "one billion, one hundred forty-four million, six hundred sixty-three thousand, five hundred".