1005604545 has 32 divisors (see below), whose sum is σ = 1847623680. Its totient is φ = 461903040.

The previous prime is 1005604543. The next prime is 1005604547. The reversal of 1005604545 is 5454065001.

It is an interprime number because it is at equal distance from previous prime (1005604543) and next prime (1005604547).

It is not a de Polignac number, because 1005604545 - 2¹ = 1005604543 is a prime.

It is a super-2 number, since 2×1005604545² = 2022481001849314050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1005604543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157249 + ... + 163518.

It is an arithmetic number, because the mean of its divisors is an integer number (57738240).

Almost surely, 2^1005604545 is an apocalyptic number.

1005604545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1005604545 is a deficient number, since it is larger than the sum of its proper divisors (842019135).

1005604545 is a wasteful number, since it uses less digits than its factorization.

1005604545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320805.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 1005604545 is about 31711.2684230701. The cubic root of 1005604545 is about 1001.8647023904.

Adding to 1005604545 its reverse (5454065001), we get a palindrome (6459669546).

It can be divided in two parts, 1005 and 604545, that added together give a triangular number (605550 = T₁₁₀₀).

The spelling of 1005604545 in words is "one billion, five million, six hundred four thousand, five hundred forty-five".