1563165534 has 32 divisors (see below), whose sum is σ = 3577718016. Its totient is φ = 446022720.

The previous prime is 1563165503. The next prime is 1563165563. The reversal of 1563165534 is 4355613651.

It is a junction number, because it is equal to n+sod(n) for n = 1563165492 and 1563165501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7509 + ... + 56415.

It is an arithmetic number, because the mean of its divisors is an integer number (111803688).

Almost surely, 2^1563165534 is an apocalyptic number.

1563165534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1563165534 is an abundant number, since it is smaller than the sum of its proper divisors (2014552482).

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

1563165534 is a wasteful number, since it uses less digits than its factorization.

1563165534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49680.

The product of its digits is 162000, while the sum is 39.

The square root of 1563165534 is about 39536.8882690583. Note that the first 3 decimals coincide. The cubic root of 1563165534 is about 1160.5619388933.

The spelling of 1563165534 in words is "one billion, five hundred sixty-three million, one hundred sixty-five thousand, five hundred thirty-four".