1563381006 has 16 divisors (see below), whose sum is σ = 3411013248. Its totient is φ = 473751800.

The previous prime is 1563380993. The next prime is 1563381073. The reversal of 1563381006 is 6001833651.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11843730 + ... + 11843861.

It is an arithmetic number, because the mean of its divisors is an integer number (213188328).

Almost surely, 2^1563381006 is an apocalyptic number.

1563381006 is an abundant number, since it is smaller than the sum of its proper divisors (1847632242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1563381006 is a wasteful number, since it uses less digits than its factorization.

1563381006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23687607.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1563381006 is about 39539.6131240557. The cubic root of 1563381006 is about 1160.6152616983.

The spelling of 1563381006 in words is "one billion, five hundred sixty-three million, three hundred eighty-one thousand, six".