1563234380 has 24 divisors (see below), whose sum is σ = 3299809632. Its totient is φ = 622052352.

The previous prime is 1563234377. The next prime is 1563234389. The reversal of 1563234380 is 834323651.

It is a self number, because there is not a number n which added to its sum of digits gives 1563234380.

It is not an unprimeable number, because it can be changed into a prime (1563234389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198632 + ... + 206351.

It is an arithmetic number, because the mean of its divisors is an integer number (137492068).

Almost surely, 2^1563234380 is an apocalyptic number.

1563234380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1563234380 is an abundant number, since it is smaller than the sum of its proper divisors (1736575252).

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

1563234380 is a wasteful number, since it uses less digits than its factorization.

1563234380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405185 (or 405183 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 1563234380 is about 39537.7589147387. The cubic root of 1563234380 is about 1160.5789767293.

The spelling of 1563234380 in words is "one billion, five hundred sixty-three million, two hundred thirty-four thousand, three hundred eighty".