1387131419 has 2 divisors, whose sum is σ = 1387131420. Its totient is φ = 1387131418.

The previous prime is 1387131407. The next prime is 1387131433. The reversal of 1387131419 is 9141317831.

It is a weak prime.

It is an emirp because it is prime and its reverse (9141317831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1387131419 - 2¹² = 1387127323 is a prime.

It is a super-2 number, since 2×1387131419² = 3848267147153907122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1387131019) 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, 693565709 + 693565710.

It is an arithmetic number, because the mean of its divisors is an integer number (693565710).

Almost surely, 2^1387131419 is an apocalyptic number.

1387131419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1387131419 is an equidigital number, since it uses as much as digits as its factorization.

1387131419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 1387131419 is about 37244.2132283661. The cubic root of 1387131419 is about 1115.2507815326.

The spelling of 1387131419 in words is "one billion, three hundred eighty-seven million, one hundred thirty-one thousand, four hundred nineteen".