1709323863854 has 4 divisors (see below), whose sum is σ = 2563985795784. Its totient is φ = 854661931926.

The previous prime is 1709323863833. The next prime is 1709323863859. The reversal of 1709323863854 is 4583683239071.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1709323863793 and 1709323863802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1709323863859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427330965962 + ... + 427330965965.

It is an arithmetic number, because the mean of its divisors is an integer number (640996448946).

It is a 1-persistent number, because it is pandigital, but 2⋅1709323863854 = 3418647727708 is not.

Almost surely, 2^{1709323863854} is an apocalyptic number.

1709323863854 is a deficient number, since it is larger than the sum of its proper divisors (854661931930).

1709323863854 is an equidigital number, since it uses as much as digits as its factorization.

1709323863854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854661931929.

The product of its (nonzero) digits is 26127360, while the sum is 59.

The spelling of 1709323863854 in words is "one trillion, seven hundred nine billion, three hundred twenty-three million, eight hundred sixty-three thousand, eight hundred fifty-four".