18871714460446 has 4 divisors (see below), whose sum is σ = 28307571690672. Its totient is φ = 9435857230222.

The previous prime is 18871714460381. The next prime is 18871714460449. The reversal of 18871714460446 is 64406441717881.

It is a happy number.

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

It is a super-2 number, since 2×18871714460446² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18871714460449) 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, 4717928615110 + ... + 4717928615113.

It is an arithmetic number, because the mean of its divisors is an integer number (7076892922668).

Almost surely, 2^{18871714460446} is an apocalyptic number.

18871714460446 is a deficient number, since it is larger than the sum of its proper divisors (9435857230226).

18871714460446 is an equidigital number, since it uses as much as digits as its factorization.

18871714460446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9435857230225.

The product of its (nonzero) digits is 28901376, while the sum is 61.

The spelling of 18871714460446 in words is "eighteen trillion, eight hundred seventy-one billion, seven hundred fourteen million, four hundred sixty thousand, four hundred forty-six".