6413243161 has 4 divisors (see below), whose sum is σ = 6906569572. Its totient is φ = 5919916752.

The previous prime is 6413243153. The next prime is 6413243171. The reversal of 6413243161 is 1613423146.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4313862400 + 2099380761 = 65680^2 + 45819^2 .

It is a cyclic number.

It is not a de Polignac number, because 6413243161 - 2³ = 6413243153 is a prime.

It is a super-2 number, since 2×6413243161² = 82259375684226543842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6413243131) 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, 246663186 + ... + 246663211.

It is an arithmetic number, because the mean of its divisors is an integer number (1726642393).

Almost surely, 2^6413243161 is an apocalyptic number.

It is an amenable number.

6413243161 is a deficient number, since it is larger than the sum of its proper divisors (493326411).

6413243161 is a wasteful number, since it uses less digits than its factorization.

6413243161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493326410.

The product of its digits is 10368, while the sum is 31.

The square root of 6413243161 is about 80082.7269827895. The cubic root of 6413243161 is about 1857.9152617485.

The spelling of 6413243161 in words is "six billion, four hundred thirteen million, two hundred forty-three thousand, one hundred sixty-one".