219740893 has 2 divisors, whose sum is σ = 219740894. Its totient is φ = 219740892.

The previous prime is 219740887. The next prime is 219740897. The reversal of 219740893 is 398047912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173132964 + 46607929 = 13158^2 + 6827^2 .

It is a cyclic number.

It is not a de Polignac number, because 219740893 - 2²⁵ = 186186461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219740897) 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, 109870446 + 109870447.

It is an arithmetic number, because the mean of its divisors is an integer number (109870447).

Almost surely, 2^219740893 is an apocalyptic number.

It is an amenable number.

219740893 is a deficient number, since it is larger than the sum of its proper divisors (1).

219740893 is an equidigital number, since it uses as much as digits as its factorization.

219740893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 219740893 is about 14823.6599057048. The cubic root of 219740893 is about 603.4439836196.

The spelling of 219740893 in words is "two hundred nineteen million, seven hundred forty thousand, eight hundred ninety-three".