2190209723 has 8 divisors (see below), whose sum is σ = 2360358000. Its totient is φ = 2020300128.

The previous prime is 2190209719. The next prime is 2190209759. The reversal of 2190209723 is 3279020912.

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 2190209723 - 2² = 2190209719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2190209023) 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, 40373 + ... + 77526.

It is an arithmetic number, because the mean of its divisors is an integer number (295044750).

Almost surely, 2^2190209723 is an apocalyptic number.

2190209723 is a deficient number, since it is larger than the sum of its proper divisors (170148277).

2190209723 is a wasteful number, since it uses less digits than its factorization.

2190209723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119341.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 2190209723 is about 46799.6765266599. The cubic root of 2190209723 is about 1298.6593126991.

The spelling of 2190209723 in words is "two billion, one hundred ninety million, two hundred nine thousand, seven hundred twenty-three".