18946665546119 has 16 divisors (see below), whose sum is σ = 20604436943616. Its totient is φ = 17349306508800.

The previous prime is 18946665546103. The next prime is 18946665546203. The reversal of 18946665546119 is 91164556664981.

It is a cyclic number.

It is not a de Polignac number, because 18946665546119 - 2⁴ = 18946665546103 is a prime.

It is a super-2 number, since 2×18946665546119² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18946665546719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11520554 + ... + 13062024.

It is an arithmetic number, because the mean of its divisors is an integer number (1287777308976).

Almost surely, 2^{18946665546119} is an apocalyptic number.

18946665546119 is a deficient number, since it is larger than the sum of its proper divisors (1657771397497).

18946665546119 is a wasteful number, since it uses less digits than its factorization.

18946665546119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561066.

The product of its digits is 335923200, while the sum is 71.

The spelling of 18946665546119 in words is "eighteen trillion, nine hundred forty-six billion, six hundred sixty-five million, five hundred forty-six thousand, one hundred nineteen".