1144521000 has 384 divisors, whose sum is σ = 4549858560. Its totient is φ = 254016000.

The previous prime is 1144520987. The next prime is 1144521013. The reversal of 1144521000 is 1254411.

1144521000 is a `hidden beast` number, since 1 + 144 + 521 + 0 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1144520987) and next prime (1144521013).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2330755 + ... + 2331245.

It is an arithmetic number, because the mean of its divisors is an integer number (11848590).

Almost surely, 2^1144521000 is an apocalyptic number.

1144521000 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 1144521000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2274929280).

1144521000 is an abundant number, since it is smaller than the sum of its proper divisors (3405337560).

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

1144521000 is a wasteful number, since it uses less digits than its factorization.

1144521000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1144521000 is about 33830.7700178403. The cubic root of 1144521000 is about 1046.0230512830.

Adding to 1144521000 its reverse (1254411), we get a palindrome (1145775411).

The spelling of 1144521000 in words is "one billion, one hundred forty-four million, five hundred twenty-one thousand".