1138618705673 has 2 divisors, whose sum is σ = 1138618705674. Its totient is φ = 1138618705672.

The previous prime is 1138618705649. The next prime is 1138618705687. The reversal of 1138618705673 is 3765078168311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1122819975424 + 15798730249 = 1059632^2 + 125693^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138618705673 - 2²² = 1138614511369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1138618701673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569309352836 + 569309352837.

It is an arithmetic number, because the mean of its divisors is an integer number (569309352837).

Almost surely, 2^{1138618705673} is an apocalyptic number.

It is an amenable number.

1138618705673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138618705673 is an equidigital number, since it uses as much as digits as its factorization.

1138618705673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 1138618705673 in words is "one trillion, one hundred thirty-eight billion, six hundred eighteen million, seven hundred five thousand, six hundred seventy-three".