1812735312 has 40 divisors (see below), whose sum is σ = 4690262304. Its totient is φ = 603295104.

The previous prime is 1812735311. The next prime is 1812735319. The reversal of 1812735312 is 2135372181.

It is a happy number.

It is a super-2 number, since 2×1812735312² = 6572018622743474688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812735311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498 + ... + 60230.

Almost surely, 2^1812735312 is an apocalyptic number.

1812735312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1812735312 is an abundant number, since it is smaller than the sum of its proper divisors (2877526992).

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

1812735312 is a wasteful number, since it uses less digits than its factorization.

1812735312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59387 (or 59381 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 1812735312 is about 42576.2294244100. The cubic root of 1812735312 is about 1219.3025019566.

The spelling of 1812735312 in words is "one billion, eight hundred twelve million, seven hundred thirty-five thousand, three hundred twelve".