6487581958 has 32 divisors (see below), whose sum is σ = 12034391040. Its totient is φ = 2578793760.

The previous prime is 6487581953. The next prime is 6487581979. The reversal of 6487581958 is 8591857846.

It is a super-2 number, since 2×6487581958² = 84177439323534227528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6487581896 and 6487581905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6487581953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591510 + ... + 602377.

It is an arithmetic number, because the mean of its divisors is an integer number (376074720).

Almost surely, 2^6487581958 is an apocalyptic number.

6487581958 is a deficient number, since it is larger than the sum of its proper divisors (5546809082).

6487581958 is a wasteful number, since it uses less digits than its factorization.

6487581958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193932.

The product of its digits is 19353600, while the sum is 61.

The square root of 6487581958 is about 80545.5272377058. The cubic root of 6487581958 is about 1865.0663469031.

The spelling of 6487581958 in words is "six billion, four hundred eighty-seven million, five hundred eighty-one thousand, nine hundred fifty-eight".