1863508842 has 40 divisors (see below), whose sum is σ = 4496848356. Its totient is φ = 573386688.

The previous prime is 1863508841. The next prime is 1863508891. The reversal of 1863508842 is 2488053681.

1863508842 is a `hidden beast` number, since 1 + 8 + 63 + 508 + 84 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1828332081 + 35176761 = 42759^2 + 5931^2 .

It is not an unprimeable number, because it can be changed into a prime (1863508841) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 440323 + ... + 444534.

Almost surely, 2^1863508842 is an apocalyptic number.

1863508842 is an abundant number, since it is smaller than the sum of its proper divisors (2633339514).

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

1863508842 is a wasteful number, since it uses less digits than its factorization.

1863508842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884884 (or 884875 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 1863508842 is about 43168.3778013490. The cubic root of 1863508842 is about 1230.5817949616.

The spelling of 1863508842 in words is "one billion, eight hundred sixty-three million, five hundred eight thousand, eight hundred forty-two".