919109137 has 2 divisors, whose sum is σ = 919109138. Its totient is φ = 919109136.

The previous prime is 919109123. The next prime is 919109183. The reversal of 919109137 is 731901919.

919109137 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 can be written as a sum of positive squares in only one way, i.e., 507871296 + 411237841 = 22536^2 + 20279^2 .

It is a cyclic number.

It is not a de Polignac number, because 919109137 - 2¹⁵ = 919076369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 919109137.

It is not a weakly prime, because it can be changed into another prime (919109197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459554568 + 459554569.

It is an arithmetic number, because the mean of its divisors is an integer number (459554569).

Almost surely, 2^919109137 is an apocalyptic number.

It is an amenable number.

919109137 is a deficient number, since it is larger than the sum of its proper divisors (1).

919109137 is an equidigital number, since it uses as much as digits as its factorization.

919109137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309, while the sum is 40.

The square root of 919109137 is about 30316.8127777311. The cubic root of 919109137 is about 972.2747960676.

The spelling of 919109137 in words is "nine hundred nineteen million, one hundred nine thousand, one hundred thirty-seven".