1387853911 has 6 divisors (see below), whose sum is σ = 1432837536. Its totient is φ = 1342883700.

The previous prime is 1387853897. The next prime is 1387853953. The reversal of 1387853911 is 1193587831.

It is not a de Polignac number, because 1387853911 - 2²¹ = 1385756759 is a prime.

It is a super-2 number, since 2×1387853911² = 3852276956555991842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387851911) 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 in 5 ways as a sum of consecutive naturals, for example, 204076 + ... + 210766.

It is an arithmetic number, because the mean of its divisors is an integer number (238806256).

Almost surely, 2^1387853911 is an apocalyptic number.

1387853911 is a deficient number, since it is larger than the sum of its proper divisors (44983625).

1387853911 is an frugal number, since it uses more digits than its factorization.

1387853911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13413 (or 6722 counting only the distinct ones).

The product of its digits is 181440, while the sum is 46.

The square root of 1387853911 is about 37253.9113516957. The cubic root of 1387853911 is about 1115.4443752813. Note that the first 3 decimals are identical.

The spelling of 1387853911 in words is "one billion, three hundred eighty-seven million, eight hundred fifty-three thousand, nine hundred eleven".