1018657443139 has 64 divisors (see below), whose sum is σ = 1293738393600. Its totient is φ = 798372288000.

The previous prime is 1018657443113. The next prime is 1018657443143. The reversal of 1018657443139 is 9313447568101.

It is not a de Polignac number, because 1018657443139 - 2⁵ = 1018657443107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1018657443539) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 162022854 + ... + 162029140.

It is an arithmetic number, because the mean of its divisors is an integer number (20214662400).

Almost surely, 2^{1018657443139} is an apocalyptic number.

1018657443139 is a deficient number, since it is larger than the sum of its proper divisors (275080950461).

1018657443139 is an equidigital number, since it uses as much as digits as its factorization.

1018657443139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7113 (or 7099 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 1018657443139 in words is "one trillion, eighteen billion, six hundred fifty-seven million, four hundred forty-three thousand, one hundred thirty-nine".