1563223444 has 12 divisors (see below), whose sum is σ = 2738332800. Its totient is φ = 780842648.

The previous prime is 1563223439. The next prime is 1563223447. The reversal of 1563223444 is 4443223651.

It is a super-2 number, since 2×1563223444² = 4887335071742442272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563223447) 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, 187684 + ... + 195835.

It is an arithmetic number, because the mean of its divisors is an integer number (228194400).

Almost surely, 2^1563223444 is an apocalyptic number.

It is an amenable number.

1563223444 is a deficient number, since it is larger than the sum of its proper divisors (1175109356).

1563223444 is a wasteful number, since it uses less digits than its factorization.

1563223444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384542 (or 384540 counting only the distinct ones).

The product of its digits is 69120, while the sum is 34.

The square root of 1563223444 is about 39537.6206163193. The cubic root of 1563223444 is about 1160.5762703488.

The spelling of 1563223444 in words is "one billion, five hundred sixty-three million, two hundred twenty-three thousand, four hundred forty-four".