381185508869 has 8 divisors (see below), whose sum is σ = 417257985312. Its totient is φ = 345349573840.

The previous prime is 381185508829. The next prime is 381185508871. The reversal of 381185508869 is 968805581183.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381185508869 is a prime.

It is a super-2 number, since 2×381185508869² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381185508829) 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, 59131979 + ... + 59138424.

It is an arithmetic number, because the mean of its divisors is an integer number (52157248164).

Almost surely, 2^381185508869 is an apocalyptic number.

It is an amenable number.

381185508869 is a deficient number, since it is larger than the sum of its proper divisors (36072476443).

381185508869 is a wasteful number, since it uses less digits than its factorization.

381185508869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118270707.

The product of its (nonzero) digits is 16588800, while the sum is 62.

The spelling of 381185508869 in words is "three hundred eighty-one billion, one hundred eighty-five million, five hundred eight thousand, eight hundred sixty-nine".