381736867 has 4 divisors (see below), whose sum is σ = 389858976. Its totient is φ = 373614760.

The previous prime is 381736813. The next prime is 381736877. The reversal of 381736867 is 768637183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381736867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381736867.

It is not an unprimeable number, because it can be changed into a prime (381736877) 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, 4060984 + ... + 4061077.

It is an arithmetic number, because the mean of its divisors is an integer number (97464744).

Almost surely, 2^381736867 is an apocalyptic number.

381736867 is a deficient number, since it is larger than the sum of its proper divisors (8122109).

381736867 is an equidigital number, since it uses as much as digits as its factorization.

381736867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8122108.

The product of its digits is 1016064, while the sum is 49.

The square root of 381736867 is about 19538.0875983296. The cubic root of 381736867 is about 725.4175110843.

The spelling of 381736867 in words is "three hundred eighty-one million, seven hundred thirty-six thousand, eight hundred sixty-seven".