381107969 has 4 divisors (see below), whose sum is σ = 415754160. Its totient is φ = 346461780.

The previous prime is 381107933. The next prime is 381107971. The reversal of 381107969 is 969701183.

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 a de Polignac number, because none of the positive numbers 2^k-381107969 is a prime.

It is a super-2 number, since 2×381107969² = 290486568070609922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (381107269) 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, 17323079 + ... + 17323100.

It is an arithmetic number, because the mean of its divisors is an integer number (103938540).

Almost surely, 2^381107969 is an apocalyptic number.

It is an amenable number.

381107969 is a deficient number, since it is larger than the sum of its proper divisors (34646191).

381107969 is a wasteful number, since it uses less digits than its factorization.

381107969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34646190.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 381107969 is about 19521.9868097486. The cubic root of 381107969 is about 725.0189255464.

The spelling of 381107969 in words is "three hundred eighty-one million, one hundred seven thousand, nine hundred sixty-nine".