1863530436 has 24 divisors (see below), whose sum is σ = 4382479360. Its totient is φ = 616285152.

The previous prime is 1863530423. The next prime is 1863530437. The reversal of 1863530436 is 6340353681.

It is a junction number, because it is equal to n+sod(n) for n = 1863530394 and 1863530403.

It is not an unprimeable number, because it can be changed into a prime (1863530437) 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 7 ways as a sum of consecutive naturals, for example, 609871 + ... + 612918.

Almost surely, 2^1863530436 is an apocalyptic number.

It is an amenable number.

1863530436 is an abundant number, since it is smaller than the sum of its proper divisors (2518948924).

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

1863530436 is a wasteful number, since it uses less digits than its factorization.

1863530436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222923 (or 1222921 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 1863530436 is about 43168.6279142620. The cubic root of 1863530436 is about 1230.5865481955.

The spelling of 1863530436 in words is "one billion, eight hundred sixty-three million, five hundred thirty thousand, four hundred thirty-six".