11481919 has 4 divisors (see below), whose sum is σ = 12157344. Its totient is φ = 10806496.

The previous prime is 11481901. The next prime is 11481923. The reversal of 11481919 is 91918411.

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 11481919 - 2¹⁹ = 10957631 is a prime.

It is a super-2 number, since 2×11481919² = 263668927845122, which 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 (11481929) 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, 337687 + ... + 337720.

It is an arithmetic number, because the mean of its divisors is an integer number (3039336).

Almost surely, 2^11481919 is an apocalyptic number.

11481919 is a deficient number, since it is larger than the sum of its proper divisors (675425).

11481919 is an equidigital number, since it uses as much as digits as its factorization.

11481919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675424.

The product of its digits is 2592, while the sum is 34.

The square root of 11481919 is about 3388.4980448570. The cubic root of 11481919 is about 225.5995139298.

The spelling of 11481919 in words is "eleven million, four hundred eighty-one thousand, nine hundred nineteen".