381704419 has 2 divisors, whose sum is σ = 381704420. Its totient is φ = 381704418.

The previous prime is 381704387. The next prime is 381704423. The reversal of 381704419 is 914407183.

It is a strong prime.

It is an emirp because it is prime and its reverse (914407183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381704419 - 2⁵ = 381704387 is a prime.

It is a super-2 number, since 2×381704419² = 291396526968255122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (381704489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190852209 + 190852210.

It is an arithmetic number, because the mean of its divisors is an integer number (190852210).

Almost surely, 2^381704419 is an apocalyptic number.

381704419 is a deficient number, since it is larger than the sum of its proper divisors (1).

381704419 is an equidigital number, since it uses as much as digits as its factorization.

381704419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 381704419 is about 19537.2572025860. The cubic root of 381704419 is about 725.3969567737.

The spelling of 381704419 in words is "three hundred eighty-one million, seven hundred four thousand, four hundred nineteen".