4543918932609 has 135 divisors (see below), whose sum is σ = 8143335628233. Its totient is φ = 2440923399936.

The previous prime is 4543918932577. The next prime is 4543918932649. The reversal of 4543918932609 is 9062398193454.

The square root of 4543918932609 is 2131647.

It is a perfect power (a square), and thus also a powerful number.

4543918932609 is a `hidden beast` number, since 4 + 5 + 4 + 3 + 9 + 18 + 9 + 3 + 2 + 609 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 272174020209 + 4271744912400 = 521703^2 + 2066820^2 .

It is not a de Polignac number, because 4543918932609 - 2⁵ = 4543918932577 is a prime.

It is a super-2 number, since 2×4543918932609² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (4543918932649) 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 134 ways as a sum of consecutive naturals, for example, 5326985427 + ... + 5326986279.

Almost surely, 2^{4543918932609} is an apocalyptic number.

4543918932609 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

4543918932609 is the 2131647-th square number.

4543918932609 is the 1065824-th centered octagonal number.

It is an amenable number.

4543918932609 is a deficient number, since it is larger than the sum of its proper divisors (3599416695624).

4543918932609 is an frugal number, since it uses more digits than its factorization.

4543918932609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 63.

The spelling of 4543918932609 in words is "four trillion, five hundred forty-three billion, nine hundred eighteen million, nine hundred thirty-two thousand, six hundred nine".