1044145557 has 36 divisors (see below), whose sum is σ = 1889416620. Its totient is φ = 550755072.

The previous prime is 1044145523. The next prime is 1044145567. The reversal of 1044145557 is 7555414401.

It can be written as a sum of positive squares in 2 ways, for example, as 235653201 + 808492356 = 15351^2 + 28434^2 .

It is not a de Polignac number, because 1044145557 - 2¹¹ = 1044143509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044145567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 85332 + ... + 96797.

It is an arithmetic number, because the mean of its divisors is an integer number (52483795).

Almost surely, 2^1044145557 is an apocalyptic number.

It is an amenable number.

1044145557 is a deficient number, since it is larger than the sum of its proper divisors (845271063).

1044145557 is a wasteful number, since it uses less digits than its factorization.

1044145557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182162 (or 182152 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 1044145557 is about 32313.2412023307. The cubic root of 1044145557 is about 1014.5038082050.

Adding to 1044145557 its reverse (7555414401), we get a palindrome (8599559958).

The spelling of 1044145557 in words is "one billion, forty-four million, one hundred forty-five thousand, five hundred fifty-seven".