383808002181 has 8 divisors (see below), whose sum is σ = 514169330784. Its totient is φ = 254659337520.

The previous prime is 383808002161. The next prime is 383808002183. The reversal of 383808002181 is 181200808383.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-383808002181 is a prime.

It is a super-2 number, since 2×383808002181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383808002183) 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, 303165246 + ... + 303166511.

It is an arithmetic number, because the mean of its divisors is an integer number (64271166348).

Almost surely, 2^383808002181 is an apocalyptic number.

It is an amenable number.

383808002181 is a deficient number, since it is larger than the sum of its proper divisors (130361328603).

383808002181 is a wasteful number, since it uses less digits than its factorization.

383808002181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606331971.

The product of its (nonzero) digits is 73728, while the sum is 42.

The spelling of 383808002181 in words is "three hundred eighty-three billion, eight hundred eight million, two thousand, one hundred eighty-one".