2219481 has 40 divisors (see below), whose sum is σ = 3763584. Its totient is φ = 1291680.

The previous prime is 2219471. The next prime is 2219489. The reversal of 2219481 is 1849122.

It is not a de Polignac number, because 2219481 - 2⁵ = 2219449 is a prime.

It is a super-2 number, since 2×2219481² = 9852191818722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2219489) 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 39 ways as a sum of consecutive naturals, for example, 41851 + ... + 41903.

2^2219481 is an apocalyptic number.

It is an amenable number.

2219481 is a deficient number, since it is larger than the sum of its proper divisors (1544103).

2219481 is a wasteful number, since it uses less digits than its factorization.

2219481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 114 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 2219481 is about 1489.7922673984. The cubic root of 2219481 is about 130.4419083498.

It can be divided in two parts, 22 and 19481, that added together give a triangular number (19503 = T₁₉₇).

The spelling of 2219481 in words is "two million, two hundred nineteen thousand, four hundred eighty-one".