219000473 has 2 divisors, whose sum is σ = 219000474. Its totient is φ = 219000472.

The previous prime is 219000469. The next prime is 219000493. The reversal of 219000473 is 374000912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118439689 + 100560784 = 10883^2 + 10028^2 .

It is a cyclic number.

It is not a de Polignac number, because 219000473 - 2² = 219000469 is a prime.

It is a super-2 number, since 2×219000473² = 95922414348447458, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (219000413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109500236 + 109500237.

It is an arithmetic number, because the mean of its divisors is an integer number (109500237).

Almost surely, 2^219000473 is an apocalyptic number.

It is an amenable number.

219000473 is a deficient number, since it is larger than the sum of its proper divisors (1).

219000473 is an equidigital number, since it uses as much as digits as its factorization.

219000473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 219000473 is about 14798.6645681291. The cubic root of 219000473 is about 602.7654499688.

The spelling of 219000473 in words is "two hundred nineteen million, four hundred seventy-three", and thus it is an aban number.