1812464472 has 64 divisors (see below), whose sum is σ = 5576820480. Its totient is φ = 478012032.

The previous prime is 1812464453. The next prime is 1812464477. The reversal of 1812464472 is 2744642181.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1812464472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812464477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412758 + ... + 417125.

It is an arithmetic number, because the mean of its divisors is an integer number (87137820).

Almost surely, 2^1812464472 is an apocalyptic number.

1812464472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1812464472 is an abundant number, since it is smaller than the sum of its proper divisors (3764356008).

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

1812464472 is a wasteful number, since it uses less digits than its factorization.

1812464472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829912 (or 829908 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 1812464472 is about 42573.0486575721. The cubic root of 1812464472 is about 1219.2417737786.

The spelling of 1812464472 in words is "one billion, eight hundred twelve million, four hundred sixty-four thousand, four hundred seventy-two".