1386155227 has 2 divisors, whose sum is σ = 1386155228. Its totient is φ = 1386155226.

The previous prime is 1386155219. The next prime is 1386155233. The reversal of 1386155227 is 7225516831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1386155227 - 2³ = 1386155219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1386155227.

It is not a weakly prime, because it can be changed into another prime (1386155257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693077613 + 693077614.

It is an arithmetic number, because the mean of its divisors is an integer number (693077614).

Almost surely, 2^1386155227 is an apocalyptic number.

1386155227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386155227 is an equidigital number, since it uses as much as digits as its factorization.

1386155227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 40.

The square root of 1386155227 is about 37231.1056376251. The cubic root of 1386155227 is about 1114.9891013567.

The spelling of 1386155227 in words is "one billion, three hundred eighty-six million, one hundred fifty-five thousand, two hundred twenty-seven".