1427605189919 has 4 divisors (see below), whose sum is σ = 1428055683840. Its totient is φ = 1427154696000.

The previous prime is 1427605189903. The next prime is 1427605189937. The reversal of 1427605189919 is 9199815067241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1427605189919 - 2⁴ = 1427605189903 is a prime.

It is a super-2 number, since 2×1427605189919² (a number of 25 digits) 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 (1427605189949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225242207 + ... + 225248544.

It is an arithmetic number, because the mean of its divisors is an integer number (357013920960).

Almost surely, 2^{1427605189919} is an apocalyptic number.

1427605189919 is a deficient number, since it is larger than the sum of its proper divisors (450493921).

1427605189919 is an equidigital number, since it uses as much as digits as its factorization.

1427605189919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450493920.

The product of its (nonzero) digits is 9797760, while the sum is 62.

The spelling of 1427605189919 in words is "one trillion, four hundred twenty-seven billion, six hundred five million, one hundred eighty-nine thousand, nine hundred nineteen".