19954866323 has 8 divisors (see below), whose sum is σ = 22806750720. Its totient is φ = 17103279240.

The previous prime is 19954866317. The next prime is 19954866341. The reversal of 19954866323 is 32366845991.

It is a happy number.

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 19954866323 - 2⁶ = 19954866259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19954866343) 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, 95318 + ... + 221348.

It is an arithmetic number, because the mean of its divisors is an integer number (2850843840).

Almost surely, 2^19954866323 is an apocalyptic number.

19954866323 is a deficient number, since it is larger than the sum of its proper divisors (2851884397).

19954866323 is a wasteful number, since it uses less digits than its factorization.

19954866323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148657.

The product of its digits is 8398080, while the sum is 56.

The spelling of 19954866323 in words is "nineteen billion, nine hundred fifty-four million, eight hundred sixty-six thousand, three hundred twenty-three".