11860019 has 4 divisors (see below), whose sum is σ = 12375696. Its totient is φ = 11344344.

The previous prime is 11859997. The next prime is 11860021. The reversal of 11860019 is 91006811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91006811 = 7 ⋅13000973.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11860019 is a prime.

It is a super-2 number, since 2×11860019² = 281320101360722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11860019.

It is not an unprimeable number, because it can be changed into a prime (11860039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257804 + ... + 257849.

It is an arithmetic number, because the mean of its divisors is an integer number (3093924).

Almost surely, 2^11860019 is an apocalyptic number.

11860019 is a deficient number, since it is larger than the sum of its proper divisors (515677).

11860019 is an equidigital number, since it uses as much as digits as its factorization.

11860019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515676.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 11860019 is about 3443.8378300960. The cubic root of 11860019 is about 228.0491519660.

The spelling of 11860019 in words is "eleven million, eight hundred sixty thousand, nineteen".