1618742886139 has 2 divisors, whose sum is σ = 1618742886140. Its totient is φ = 1618742886138.

The previous prime is 1618742886067. The next prime is 1618742886181. The reversal of 1618742886139 is 9316882478161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1618742886139 - 2¹¹ = 1618742884091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1618742856139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809371443069 + 809371443070.

It is an arithmetic number, because the mean of its divisors is an integer number (809371443070).

Almost surely, 2^{1618742886139} is an apocalyptic number.

1618742886139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618742886139 is an equidigital number, since it uses as much as digits as its factorization.

1618742886139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27869184, while the sum is 64.

The spelling of 1618742886139 in words is "one trillion, six hundred eighteen billion, seven hundred forty-two million, eight hundred eighty-six thousand, one hundred thirty-nine".