11387855419 has 2 divisors, whose sum is σ = 11387855420. Its totient is φ = 11387855418.

The previous prime is 11387855389. The next prime is 11387855461. The reversal of 11387855419 is 91455878311.

11387855419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11387855419 - 2²⁷ = 11253637691 is a prime.

It is a super-2 number, since 2×11387855419² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11387855489) 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, 5693927709 + 5693927710.

It is an arithmetic number, because the mean of its divisors is an integer number (5693927710).

Almost surely, 2^11387855419 is an apocalyptic number.

11387855419 is a deficient number, since it is larger than the sum of its proper divisors (1).

11387855419 is an equidigital number, since it uses as much as digits as its factorization.

11387855419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 52.

The spelling of 11387855419 in words is "eleven billion, three hundred eighty-seven million, eight hundred fifty-five thousand, four hundred nineteen".