1145153044 has 48 divisors (see below), whose sum is σ = 2401862400. Its totient is φ = 467341056.

The previous prime is 1145153039. The next prime is 1145153057. The reversal of 1145153044 is 4403515411.

It is a super-2 number, since 2×1145153044² = 2622750988364931872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49617 + ... + 68935.

It is an arithmetic number, because the mean of its divisors is an integer number (50038800).

Almost surely, 2^1145153044 is an apocalyptic number.

1145153044 is a gapful number since it is divisible by the number (14) 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 1145153044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1200931200).

1145153044 is an abundant number, since it is smaller than the sum of its proper divisors (1256709356).

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

1145153044 is a wasteful number, since it uses less digits than its factorization.

1145153044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19432 (or 19430 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1145153044 is about 33840.1099880009. The cubic root of 1145153044 is about 1046.2155658606.

Adding to 1145153044 its reverse (4403515411), we get a palindrome (5548668455).

The spelling of 1145153044 in words is "one billion, one hundred forty-five million, one hundred fifty-three thousand, forty-four".