1997190222 has 8 divisors (see below), whose sum is σ = 3994380456. Its totient is φ = 665730072.

The previous prime is 1997190197. The next prime is 1997190229. The reversal of 1997190222 is 2220917991.

1997190222 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

1997190222 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997190229) 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, 166432513 + ... + 166432524.

It is an arithmetic number, because the mean of its divisors is an integer number (499297557).

Almost surely, 2^1997190222 is an apocalyptic number.

1997190222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1997190222 is a wasteful number, since it uses less digits than its factorization.

1997190222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332865042.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 1997190222 is about 44689.9342357986. The cubic root of 1997190222 is about 1259.3307569685.

The spelling of 1997190222 in words is "one billion, nine hundred ninety-seven million, one hundred ninety thousand, two hundred twenty-two".