119019809 has 2 divisors, whose sum is σ = 119019810. Its totient is φ = 119019808.

The previous prime is 119019751. The next prime is 119019827. The reversal of 119019809 is 908910911.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118875409 + 144400 = 10903^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 119019809 - 2¹⁶ = 118954273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (119019209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59509904 + 59509905.

It is an arithmetic number, because the mean of its divisors is an integer number (59509905).

Almost surely, 2^119019809 is an apocalyptic number.

It is an amenable number.

119019809 is a deficient number, since it is larger than the sum of its proper divisors (1).

119019809 is an equidigital number, since it uses as much as digits as its factorization.

119019809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 38.

The square root of 119019809 is about 10909.6200208807. The cubic root of 119019809 is about 491.8957644319.

The spelling of 119019809 in words is "one hundred nineteen million, nineteen thousand, eight hundred nine".