1385186954989 has 2 divisors, whose sum is σ = 1385186954990. Its totient is φ = 1385186954988.

The previous prime is 1385186954959. The next prime is 1385186955083. The reversal of 1385186954989 is 9894596815831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1369700396964 + 15486558025 = 1170342^2 + 124445^2 .

It is a cyclic number.

It is not a de Polignac number, because 1385186954989 - 2⁹ = 1385186954477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1385186954959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692593477494 + 692593477495.

It is an arithmetic number, because the mean of its divisors is an integer number (692593477495).

Almost surely, 2^{1385186954989} is an apocalyptic number.

It is an amenable number.

1385186954989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385186954989 is an equidigital number, since it uses as much as digits as its factorization.

1385186954989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 671846400, while the sum is 76.

The spelling of 1385186954989 in words is "one trillion, three hundred eighty-five billion, one hundred eighty-six million, nine hundred fifty-four thousand, nine hundred eighty-nine".