1563349398 has 32 divisors (see below), whose sum is σ = 3371305056. Its totient is φ = 480446208.

The previous prime is 1563349363. The next prime is 1563349423. The reversal of 1563349398 is 8939433651.

It is a happy number.

It is a super-2 number, since 2×1563349398² = 4888122680453924808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1563349398.

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 15 ways as a sum of consecutive naturals, for example, 54786 + ... + 78282.

It is an arithmetic number, because the mean of its divisors is an integer number (105353283).

Almost surely, 2^1563349398 is an apocalyptic number.

1563349398 is an abundant number, since it is smaller than the sum of its proper divisors (1807955658).

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

1563349398 is a wasteful number, since it uses less digits than its factorization.

1563349398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24368.

The product of its digits is 2099520, while the sum is 51.

The square root of 1563349398 is about 39539.2134216148. The cubic root of 1563349398 is about 1160.6074399806.

The spelling of 1563349398 in words is "one billion, five hundred sixty-three million, three hundred forty-nine thousand, three hundred ninety-eight".