6209993540 has 48 divisors (see below), whose sum is σ = 13156525872. Its totient is φ = 2462048256.

The previous prime is 6209993509. The next prime is 6209993551. The reversal of 6209993540 is 453999026.

It can be written as a sum of positive squares in 8 ways, for example, as 299151616 + 5910841924 = 17296^2 + 76882^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2335892 + ... + 2338548.

It is an arithmetic number, because the mean of its divisors is an integer number (274094289).

Almost surely, 2^6209993540 is an apocalyptic number.

It is an amenable number.

6209993540 is an abundant number, since it is smaller than the sum of its proper divisors (6946532332).

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

6209993540 is a wasteful number, since it uses less digits than its factorization.

6209993540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3656 (or 3654 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 47.

The square root of 6209993540 is about 78803.5122313720. The cubic root of 6209993540 is about 1838.0770652102.

The spelling of 6209993540 in words is "six billion, two hundred nine million, nine hundred ninety-three thousand, five hundred forty".