219250090 has 8 divisors (see below), whose sum is σ = 394650180. Its totient is φ = 87700032.

The previous prime is 219250079. The next prime is 219250091. The reversal of 219250090 is 90052912.

It can be written as a sum of positive squares in 2 ways, for example, as 197655481 + 21594609 = 14059^2 + 4647^2 .

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 (219250091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10962495 + ... + 10962514.

Almost surely, 2^219250090 is an apocalyptic number.

219250090 is a deficient number, since it is larger than the sum of its proper divisors (175400090).

219250090 is a wasteful number, since it uses less digits than its factorization.

219250090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21925016.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 219250090 is about 14807.0959340446. The cubic root of 219250090 is about 602.9943739408.

The spelling of 219250090 in words is "two hundred nineteen million, two hundred fifty thousand, ninety".