11964238519 has 4 divisors (see below), whose sum is σ = 11964710296. Its totient is φ = 11963766744.

The previous prime is 11964238511. The next prime is 11964238541. The reversal of 11964238519 is 91583246911.

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 11964238519 - 2³ = 11964238511 is a prime.

It is a super-2 number, since 2×11964238519² (a number of 21 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 (11964238511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195549 + ... + 249334.

It is an arithmetic number, because the mean of its divisors is an integer number (2991177574).

Almost surely, 2^11964238519 is an apocalyptic number.

11964238519 is a deficient number, since it is larger than the sum of its proper divisors (471777).

11964238519 is an equidigital number, since it uses as much as digits as its factorization.

11964238519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471776.

The product of its digits is 466560, while the sum is 49.

The spelling of 11964238519 in words is "eleven billion, nine hundred sixty-four million, two hundred thirty-eight thousand, five hundred nineteen".