6413855531 has 4 divisors (see below), whose sum is σ = 6454708272. Its totient is φ = 6373002792.

The previous prime is 6413855527. The next prime is 6413855537. The reversal of 6413855531 is 1355583146.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6413855531 - 2² = 6413855527 is a prime.

It is a super-2 number, since 2×6413855531² = 82275085545078583922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6413855537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20426135 + ... + 20426448.

It is an arithmetic number, because the mean of its divisors is an integer number (1613677068).

Almost surely, 2^6413855531 is an apocalyptic number.

6413855531 is a deficient number, since it is larger than the sum of its proper divisors (40852741).

6413855531 is a wasteful number, since it uses less digits than its factorization.

6413855531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40852740.

The product of its digits is 216000, while the sum is 41.

The square root of 6413855531 is about 80086.5502503385. The cubic root of 6413855531 is about 1857.9743943553.

The spelling of 6413855531 in words is "six billion, four hundred thirteen million, eight hundred fifty-five thousand, five hundred thirty-one".