1836535812 has 24 divisors (see below), whose sum is σ = 4291598976. Its totient is φ = 611271648.

The previous prime is 1836535787. The next prime is 1836535817. The reversal of 1836535812 is 2185356381.

It is not an unprimeable number, because it can be changed into a prime (1836535817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104908 + ... + 121155.

It is an arithmetic number, because the mean of its divisors is an integer number (178816624).

Almost surely, 2^1836535812 is an apocalyptic number.

1836535812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1836535812 is an abundant number, since it is smaller than the sum of its proper divisors (2455063164).

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

1836535812 is a wasteful number, since it uses less digits than its factorization.

1836535812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226747 (or 226745 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 1836535812 is about 42854.8225057577. The cubic root of 1836535812 is about 1224.6156366247.

The spelling of 1836535812 in words is "one billion, eight hundred thirty-six million, five hundred thirty-five thousand, eight hundred twelve".