11713819 has 4 divisors (see below), whose sum is σ = 12614896. Its totient is φ = 10812744.

The previous prime is 11713813. The next prime is 11713829. The reversal of 11713819 is 91831711.

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 11713819 - 2¹⁹ = 11189531 is a prime.

It is a super-2 number, since 2×11713819² = 274427111129522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11713813) 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, 450519 + ... + 450544.

It is an arithmetic number, because the mean of its divisors is an integer number (3153724).

Almost surely, 2^11713819 is an apocalyptic number.

11713819 is a deficient number, since it is larger than the sum of its proper divisors (901077).

11713819 is an equidigital number, since it uses as much as digits as its factorization.

11713819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901076.

The product of its digits is 1512, while the sum is 31.

The square root of 11713819 is about 3422.5456899799. The cubic root of 11713819 is about 227.1082110687.

The spelling of 11713819 in words is "eleven million, seven hundred thirteen thousand, eight hundred nineteen".