1018376685385 has 16 divisors (see below), whose sum is σ = 1362039408000. Its totient is φ = 726421015296.

The previous prime is 1018376685331. The next prime is 1018376685413. The reversal of 1018376685385 is 5835866738101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1018376685385 - 2⁷ = 1018376685257 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 315285285 + ... + 315288514.

It is an arithmetic number, because the mean of its divisors is an integer number (85127463000).

Almost surely, 2^{1018376685385} is an apocalyptic number.

It is an amenable number.

1018376685385 is a deficient number, since it is larger than the sum of its proper divisors (343662722615).

1018376685385 is a wasteful number, since it uses less digits than its factorization.

1018376685385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630573840.

The product of its (nonzero) digits is 29030400, while the sum is 61.

The spelling of 1018376685385 in words is "one trillion, eighteen billion, three hundred seventy-six million, six hundred eighty-five thousand, three hundred eighty-five".