1385186215 has 32 divisors (see below), whose sum is σ = 1945866240. Its totient is φ = 927024000.

The previous prime is 1385186183. The next prime is 1385186221. The reversal of 1385186215 is 5126815831.

It is a happy number.

1385186215 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1385186215 - 2⁵ = 1385186183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248226 + ... + 253744.

It is an arithmetic number, because the mean of its divisors is an integer number (60808320).

Almost surely, 2^1385186215 is an apocalyptic number.

1385186215 is a deficient number, since it is larger than the sum of its proper divisors (560680025).

1385186215 is a wasteful number, since it uses less digits than its factorization.

1385186215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5703.

The product of its digits is 57600, while the sum is 40.

The square root of 1385186215 is about 37218.0898891923. The cubic root of 1385186215 is about 1114.7292243336.

The spelling of 1385186215 in words is "one billion, three hundred eighty-five million, one hundred eighty-six thousand, two hundred fifteen".