219397130 has 8 divisors (see below), whose sum is σ = 394914852. Its totient is φ = 87758848.

The previous prime is 219397103. The next prime is 219397133. The reversal of 219397130 is 31793912.

It can be written as a sum of positive squares in 2 ways, for example, as 198612649 + 20784481 = 14093^2 + 4559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (219397133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10969847 + ... + 10969866.

Almost surely, 2^219397130 is an apocalyptic number.

219397130 is a deficient number, since it is larger than the sum of its proper divisors (175517722).

219397130 is a wasteful number, since it uses less digits than its factorization.

219397130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21939720.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 219397130 is about 14812.0602888322. The cubic root of 219397130 is about 603.1291431432.

The spelling of 219397130 in words is "two hundred nineteen million, three hundred ninety-seven thousand, one hundred thirty".