219190051 has 2 divisors, whose sum is σ = 219190052. Its totient is φ = 219190050.

The previous prime is 219190021. The next prime is 219190063. The reversal of 219190051 is 150091912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 219190051 - 2⁷ = 219189923 is a prime.

It is not a weakly prime, because it can be changed into another prime (219190021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109595025 + 109595026.

It is an arithmetic number, because the mean of its divisors is an integer number (109595026).

Almost surely, 2^219190051 is an apocalyptic number.

219190051 is a deficient number, since it is larger than the sum of its proper divisors (1).

219190051 is an equidigital number, since it uses as much as digits as its factorization.

219190051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 28.

The square root of 219190051 is about 14805.0684226720. The cubic root of 219190051 is about 602.9393279971.

The spelling of 219190051 in words is "two hundred nineteen million, one hundred ninety thousand, fifty-one".