1563530340 has 48 divisors (see below), whose sum is σ = 4568231808. Its totient is φ = 398813184.

The previous prime is 1563530327. The next prime is 1563530351. The reversal of 1563530340 is 430353651.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1563530298 and 1563530307.

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, 565117 + ... + 567876.

It is an arithmetic number, because the mean of its divisors is an integer number (95171496).

Almost surely, 2^1563530340 is an apocalyptic number.

1563530340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1563530340 is an abundant number, since it is smaller than the sum of its proper divisors (3004701468).

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

1563530340 is a wasteful number, since it uses less digits than its factorization.

1563530340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133028 (or 1133026 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 1563530340 is about 39541.5014889420. The cubic root of 1563530340 is about 1160.6522144736.

Adding to 1563530340 its reverse (430353651), we get a palindrome (1993883991).

The spelling of 1563530340 in words is "one billion, five hundred sixty-three million, five hundred thirty thousand, three hundred forty".