104819381 has 2 divisors, whose sum is σ = 104819382. Its totient is φ = 104819380.

The previous prime is 104819321. The next prime is 104819389. The reversal of 104819381 is 183918401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57896881 + 46922500 = 7609^2 + 6850^2 .

It is an emirp because it is prime and its reverse (183918401) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104819381 is a prime.

It is a super-2 number, since 2×104819381² = 21974205266446322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104819389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52409690 + 52409691.

It is an arithmetic number, because the mean of its divisors is an integer number (52409691).

Almost surely, 2^104819381 is an apocalyptic number.

It is an amenable number.

104819381 is a deficient number, since it is larger than the sum of its proper divisors (1).

104819381 is an equidigital number, since it uses as much as digits as its factorization.

104819381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 104819381 is about 10238.1336678127. The cubic root of 104819381 is about 471.4987331973.

The spelling of 104819381 in words is "one hundred four million, eight hundred nineteen thousand, three hundred eighty-one".