381244169 has 4 divisors (see below), whose sum is σ = 393542400. Its totient is φ = 368945940.

The previous prime is 381244147. The next prime is 381244183. The reversal of 381244169 is 961442183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 381244169 - 2²⁰ = 380195593 is a prime.

It is a super-2 number, since 2×381244169² = 290694232793001122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381244109) 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, 6149069 + ... + 6149130.

It is an arithmetic number, because the mean of its divisors is an integer number (98385600).

Almost surely, 2^381244169 is an apocalyptic number.

It is an amenable number.

381244169 is a deficient number, since it is larger than the sum of its proper divisors (12298231).

381244169 is a wasteful number, since it uses less digits than its factorization.

381244169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12298230.

The product of its digits is 41472, while the sum is 38.

The square root of 381244169 is about 19525.4748725863. The cubic root of 381244169 is about 725.1052841154.

The spelling of 381244169 in words is "three hundred eighty-one million, two hundred forty-four thousand, one hundred sixty-nine".