1812514452 has 96 divisors (see below), whose sum is σ = 4914174720. Its totient is φ = 509276160.

The previous prime is 1812514433. The next prime is 1812514477. The reversal of 1812514452 is 2544152181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1474174 + ... + 1475402.

It is an arithmetic number, because the mean of its divisors is an integer number (51189320).

Almost surely, 2^1812514452 is an apocalyptic number.

1812514452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812514452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2457087360).

1812514452 is an abundant number, since it is smaller than the sum of its proper divisors (3101660268).

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

1812514452 is a wasteful number, since it uses less digits than its factorization.

1812514452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521 (or 1519 counting only the distinct ones).

The product of its digits is 12800, while the sum is 33.

The square root of 1812514452 is about 42573.6356446099. The cubic root of 1812514452 is about 1219.2529808293.

The spelling of 1812514452 in words is "one billion, eight hundred twelve million, five hundred fourteen thousand, four hundred fifty-two".