18494785946801 has 16 divisors (see below), whose sum is σ = 18737702343360. Its totient is φ = 18252354074880.

The previous prime is 18494785946797. The next prime is 18494785946807. The reversal of 18494785946801 is 10864958749481.

It is a cyclic number.

It is not a de Polignac number, because 18494785946801 - 2² = 18494785946797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18494785946807) 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, 606550166 + ... + 606580656.

It is an arithmetic number, because the mean of its divisors is an integer number (1171106396460).

Almost surely, 2^{18494785946801} is an apocalyptic number.

It is an amenable number.

18494785946801 is a deficient number, since it is larger than the sum of its proper divisors (242916396559).

18494785946801 is a wasteful number, since it uses less digits than its factorization.

18494785946801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38176.

The product of its (nonzero) digits is 557383680, while the sum is 74.

The spelling of 18494785946801 in words is "eighteen trillion, four hundred ninety-four billion, seven hundred eighty-five million, nine hundred forty-six thousand, eight hundred one".