6534918957 has 48 divisors (see below), whose sum is σ = 11037297600. Its totient is φ = 3415668480.

The previous prime is 6534918931. The next prime is 6534918977. The reversal of 6534918957 is 7598194356.

It is not a de Polignac number, because 6534918957 - 2⁶ = 6534918893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 6534918897 and 6534918906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6534918977) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40657 + ... + 121337.

It is an arithmetic number, because the mean of its divisors is an integer number (229943700).

Almost surely, 2^6534918957 is an apocalyptic number.

It is an amenable number.

6534918957 is a deficient number, since it is larger than the sum of its proper divisors (4502378643).

6534918957 is a wasteful number, since it uses less digits than its factorization.

6534918957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80746 (or 80739 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 57.

The square root of 6534918957 is about 80838.8455941820. The cubic root of 6534918957 is about 1869.5915449990.

The spelling of 6534918957 in words is "six billion, five hundred thirty-four million, nine hundred eighteen thousand, nine hundred fifty-seven".