6489388236 has 24 divisors (see below), whose sum is σ = 15144003504. Its totient is φ = 2162829760.

The previous prime is 6489388219. The next prime is 6489388237. The reversal of 6489388236 is 6328839846.

It is a happy number.

It is a super-2 number, since 2×6489388236² = 84224319355070383392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6489388237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63706 + ... + 130526.

It is an arithmetic number, because the mean of its divisors is an integer number (631000146).

Almost surely, 2^6489388236 is an apocalyptic number.

It is an amenable number.

6489388236 is an abundant number, since it is smaller than the sum of its proper divisors (8654615268).

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

6489388236 is a wasteful number, since it uses less digits than its factorization.

6489388236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74921 (or 74919 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 57.

The square root of 6489388236 is about 80556.7392339089. The cubic root of 6489388236 is about 1865.2394219527.

The spelling of 6489388236 in words is "six billion, four hundred eighty-nine million, three hundred eighty-eight thousand, two hundred thirty-six".