6423541609 has 3 divisors (see below), whose sum is σ = 6423621757. Its totient is φ = 6423461462.

The previous prime is 6423541601. The next prime is 6423541667. The reversal of 6423541609 is 9061453246.

The square root of 6423541609 is 80147.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 6423541609 - 2³ = 6423541601 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6423541601) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 40074 + ... + 120220.

Almost surely, 2^6423541609 is an apocalyptic number.

6423541609 is the 80147-th square number.

6423541609 is the 40074-th centered octagonal number.

It is an amenable number.

6423541609 is a deficient number, since it is larger than the sum of its proper divisors (80148).

6423541609 is an frugal number, since it uses more digits than its factorization.

6423541609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160294 (or 80147 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The cubic root of 6423541609 is about 1858.9092160134.

The spelling of 6423541609 in words is "six billion, four hundred twenty-three million, five hundred forty-one thousand, six hundred nine".