3818402161 has 8 divisors (see below), whose sum is σ = 4364953920. Its totient is φ = 3272116848.

The previous prime is 3818402143. The next prime is 3818402171. The reversal of 3818402161 is 1612048183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3818402161 - 2²⁷ = 3684184433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3818402101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34891 + ... + 94096.

It is an arithmetic number, because the mean of its divisors is an integer number (545619240).

Almost surely, 2^3818402161 is an apocalyptic number.

It is an amenable number.

3818402161 is a deficient number, since it is larger than the sum of its proper divisors (546551759).

3818402161 is a wasteful number, since it uses less digits than its factorization.

3818402161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133223.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 3818402161 is about 61793.2209955105. The cubic root of 3818402161 is about 1563.0056780430.

The spelling of 3818402161 in words is "three billion, eight hundred eighteen million, four hundred two thousand, one hundred sixty-one".