219380193 has 6 divisors (see below), whose sum is σ = 316882514. Its totient is φ = 146253456.

The previous prime is 219380173. The next prime is 219380207. The reversal of 219380193 is 391083912.

It can be written as a sum of positive squares in only one way, i.e., 209438784 + 9941409 = 14472^2 + 3153^2 .

It is not a de Polignac number, because 219380193 - 2⁶ = 219380129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219380123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12187780 + ... + 12187797.

Almost surely, 2^219380193 is an apocalyptic number.

It is an amenable number.

219380193 is a deficient number, since it is larger than the sum of its proper divisors (97502321).

219380193 is a wasteful number, since it uses less digits than its factorization.

219380193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24375583 (or 24375580 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 219380193 is about 14811.4885477456. The cubic root of 219380193 is about 603.1136226406.

The spelling of 219380193 in words is "two hundred nineteen million, three hundred eighty thousand, one hundred ninety-three".