6191473840 has 20 divisors (see below), whose sum is σ = 14395176864. Its totient is φ = 2476589504.

The previous prime is 6191473811. The next prime is 6191473843. The reversal of 6191473840 is 483741916.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×6191473840² = 76668696622808691200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6191473843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38696632 + ... + 38696791.

Almost surely, 2^6191473840 is an apocalyptic number.

It is an amenable number.

6191473840 is an abundant number, since it is smaller than the sum of its proper divisors (8203703024).

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

6191473840 is a wasteful number, since it uses less digits than its factorization.

6191473840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77393436 (or 77393430 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 6191473840 is about 78685.9189436077. The cubic root of 6191473840 is about 1836.2480492908.

The spelling of 6191473840 in words is "six billion, one hundred ninety-one million, four hundred seventy-three thousand, eight hundred forty".