6413829881 has 4 divisors (see below), whose sum is σ = 6416376564. Its totient is φ = 6411283200.

The previous prime is 6413829869. The next prime is 6413829893. The reversal of 6413829881 is 1889283146.

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

It is an interprime number because it is at equal distance from previous prime (6413829869) and next prime (6413829893).

It can be written as a sum of positive squares in 2 ways, for example, as 1180609600 + 5233220281 = 34360^2 + 72341^2 .

It is a cyclic number.

It is not a de Polignac number, because 6413829881 - 2¹⁰ = 6413828857 is a prime.

It is a super-2 number, since 2×6413829881² = 82274427484816948322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6413829181) 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, 1269560 + ... + 1274601.

It is an arithmetic number, because the mean of its divisors is an integer number (1604094141).

Almost surely, 2^6413829881 is an apocalyptic number.

It is an amenable number.

6413829881 is a deficient number, since it is larger than the sum of its proper divisors (2546683).

6413829881 is a wasteful number, since it uses less digits than its factorization.

6413829881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2546682.

The product of its digits is 663552, while the sum is 50.

The square root of 6413829881 is about 80086.3901109296. The cubic root of 6413829881 is about 1857.9719175764.

The spelling of 6413829881 in words is "six billion, four hundred thirteen million, eight hundred twenty-nine thousand, eight hundred eighty-one".