190093819 has 2 divisors, whose sum is σ = 190093820. Its totient is φ = 190093818.

The previous prime is 190093801. The next prime is 190093823. The reversal of 190093819 is 918390091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 190093819 - 2⁷ = 190093691 is a prime.

It is a super-2 number, since 2×190093819² = 72271320044009522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (190090819) 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, 95046909 + 95046910.

It is an arithmetic number, because the mean of its divisors is an integer number (95046910).

Almost surely, 2^190093819 is an apocalyptic number.

190093819 is a deficient number, since it is larger than the sum of its proper divisors (1).

190093819 is an equidigital number, since it uses as much as digits as its factorization.

190093819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 190093819 is about 13787.4515049011. The cubic root of 190093819 is about 574.9843161444.

The spelling of 190093819 in words is "one hundred ninety million, ninety-three thousand, eight hundred nineteen".