224745919 has 4 divisors (see below), whose sum is σ = 224856000. Its totient is φ = 224635840.

The previous prime is 224745893. The next prime is 224745923. The reversal of 224745919 is 919547422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919547422 = 2 ⋅459773711.

It is a cyclic number.

It is not a de Polignac number, because 224745919 - 2⁷ = 224745791 is a prime.

It is a super-2 number, since 2×224745919² = 101021456214309122, 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 (224745929) 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, 51919 + ... + 56080.

It is an arithmetic number, because the mean of its divisors is an integer number (56214000).

Almost surely, 2^224745919 is an apocalyptic number.

224745919 is a deficient number, since it is larger than the sum of its proper divisors (110081).

224745919 is a wasteful number, since it uses less digits than its factorization.

224745919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110080.

The product of its digits is 181440, while the sum is 43.

The square root of 224745919 is about 14991.5282409766. The cubic root of 224745919 is about 607.9911693301.

The spelling of 224745919 in words is "two hundred twenty-four million, seven hundred forty-five thousand, nine hundred nineteen".