919438141 has 2 divisors, whose sum is σ = 919438142. Its totient is φ = 919438140.

The previous prime is 919438109. The next prime is 919438147. The reversal of 919438141 is 141834919.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 762036025 + 157402116 = 27605^2 + 12546^2 .

It is an emirp because it is prime and its reverse (141834919) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 919438141 - 2⁵ = 919438109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 919438094 and 919438103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (919438147) 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, 459719070 + 459719071.

It is an arithmetic number, because the mean of its divisors is an integer number (459719071).

Almost surely, 2^919438141 is an apocalyptic number.

It is an amenable number.

919438141 is a deficient number, since it is larger than the sum of its proper divisors (1).

919438141 is an equidigital number, since it uses as much as digits as its factorization.

919438141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 919438141 is about 30322.2383903300. The cubic root of 919438141 is about 972.3907939483.

The spelling of 919438141 in words is "nine hundred nineteen million, four hundred thirty-eight thousand, one hundred forty-one".