1997190223 has 8 divisors (see below), whose sum is σ = 2331067392. Its totient is φ = 1675454136.

The previous prime is 1997190197. The next prime is 1997190229. The reversal of 1997190223 is 3220917991.

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

It is a cyclic number.

It is not a de Polignac number, because 1997190223 - 2⁵ = 1997190191 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1997190223.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3034915 + ... + 3035572.

It is an arithmetic number, because the mean of its divisors is an integer number (291383424).

Almost surely, 2^1997190223 is an apocalyptic number.

1997190223 is a deficient number, since it is larger than the sum of its proper divisors (333877169).

1997190223 is an equidigital number, since it uses as much as digits as its factorization.

1997190223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6070541.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 1997190223 is about 44689.9342469868. The cubic root of 1997190223 is about 1259.3307571787.

The spelling of 1997190223 in words is "one billion, nine hundred ninety-seven million, one hundred ninety thousand, two hundred twenty-three".