100775819 has 2 divisors, whose sum is σ = 100775820. Its totient is φ = 100775818.

The previous prime is 100775809. The next prime is 100775833. The reversal of 100775819 is 918577001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100775819 - 2⁴ = 100775803 is a prime.

It is a super-2 number, since 2×100775819² = 20311531390241522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100775809) 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, 50387909 + 50387910.

It is an arithmetic number, because the mean of its divisors is an integer number (50387910).

Almost surely, 2^100775819 is an apocalyptic number.

100775819 is a deficient number, since it is larger than the sum of its proper divisors (1).

100775819 is an equidigital number, since it uses as much as digits as its factorization.

100775819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 100775819 is about 10038.7160035534. The cubic root of 100775819 is about 465.3561367746.

The spelling of 100775819 in words is "one hundred million, seven hundred seventy-five thousand, eight hundred nineteen".