1018612138985 has 32 divisors (see below), whose sum is σ = 1449022629120. Its totient is φ = 672887513088.

The previous prime is 1018612138981. The next prime is 1018612138991. The reversal of 1018612138985 is 5898312168101.

1018612138985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1018612138985 - 2² = 1018612138981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1018612138981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4525880 + ... + 4745609.

It is an arithmetic number, because the mean of its divisors is an integer number (45281957160).

Almost surely, 2^{1018612138985} is an apocalyptic number.

It is an amenable number.

1018612138985 is a deficient number, since it is larger than the sum of its proper divisors (430410490135).

1018612138985 is an equidigital number, since it uses as much as digits as its factorization.

1018612138985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9271617.

The product of its (nonzero) digits is 829440, while the sum is 53.

The spelling of 1018612138985 in words is "one trillion, eighteen billion, six hundred twelve million, one hundred thirty-eight thousand, nine hundred eighty-five".