190164721723 has 8 divisors (see below), whose sum is σ = 194218454592. Its totient is φ = 186111308736.

The previous prime is 190164721711. The next prime is 190164721729. The reversal of 190164721723 is 327127461091.

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 190164721723 - 2³³ = 181574787131 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 190164721723.

It is not an unprimeable number, because it can be changed into a prime (190164721729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1417111 + ... + 1545487.

It is an arithmetic number, because the mean of its divisors is an integer number (24277306824).

Almost surely, 2^190164721723 is an apocalyptic number.

190164721723 is a deficient number, since it is larger than the sum of its proper divisors (4053732869).

190164721723 is a wasteful number, since it uses less digits than its factorization.

190164721723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159941.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 190164721723 in words is "one hundred ninety billion, one hundred sixty-four million, seven hundred twenty-one thousand, seven hundred twenty-three".