1018194294985 has 16 divisors (see below), whose sum is σ = 1397711952000. Its totient is φ = 697524771456.

The previous prime is 1018194294983. The next prime is 1018194294991. The reversal of 1018194294985 is 5894924918101.

It is a cyclic number.

It is not a de Polignac number, because 1018194294985 - 2¹ = 1018194294983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1018194294983) 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, 13829475 + ... + 13902904.

It is an arithmetic number, because the mean of its divisors is an integer number (87356997000).

Almost surely, 2^{1018194294985} is an apocalyptic number.

It is an amenable number.

1018194294985 is a deficient number, since it is larger than the sum of its proper divisors (379517657015).

1018194294985 is a wasteful number, since it uses less digits than its factorization.

1018194294985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27733440.

The product of its (nonzero) digits is 7464960, while the sum is 61.

The spelling of 1018194294985 in words is "one trillion, eighteen billion, one hundred ninety-four million, two hundred ninety-four thousand, nine hundred eighty-five".