11819519 has 2 divisors, whose sum is σ = 11819520. Its totient is φ = 11819518.

The previous prime is 11819491. The next prime is 11819527. The reversal of 11819519 is 91591811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11819519 - 2¹⁶ = 11753983 is a prime.

It is a super-2 number, since 2×11819519² = 279402058782722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11819719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5909759 + 5909760.

It is an arithmetic number, because the mean of its divisors is an integer number (5909760).

Almost surely, 2^11819519 is an apocalyptic number.

11819519 is a deficient number, since it is larger than the sum of its proper divisors (1).

11819519 is an equidigital number, since it uses as much as digits as its factorization.

11819519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 35.

The square root of 11819519 is about 3437.9527338228. The cubic root of 11819519 is about 227.7892725686.

The spelling of 11819519 in words is "eleven million, eight hundred nineteen thousand, five hundred nineteen".