1386853971 has 16 divisors (see below), whose sum is σ = 1907520768. Its totient is φ = 895831200.

The previous prime is 1386853933. The next prime is 1386853973. The reversal of 1386853971 is 1793586831.

It is not a de Polignac number, because 1386853971 - 2¹¹ = 1386851923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1386853973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44295 + ... + 68816.

It is an arithmetic number, because the mean of its divisors is an integer number (119220048).

Almost surely, 2^1386853971 is an apocalyptic number.

1386853971 is a deficient number, since it is larger than the sum of its proper divisors (520666797).

1386853971 is a wasteful number, since it uses less digits than its factorization.

1386853971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113242.

The product of its digits is 1088640, while the sum is 51.

The square root of 1386853971 is about 37240.4883292365. The cubic root of 1386853971 is about 1115.1764207026.

The spelling of 1386853971 in words is "one billion, three hundred eighty-six million, eight hundred fifty-three thousand, nine hundred seventy-one".