1812479130 has 144 divisors (see below), whose sum is σ = 5980332384. Its totient is φ = 376608960.

The previous prime is 1812479129. The next prime is 1812479131. The reversal of 1812479130 is 319742181.

It is a happy number.

1812479130 is a `hidden beast` number, since 181 + 2 + 479 + 1 + 3 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1812479129) and next prime (1812479131).

It is not an unprimeable number, because it can be changed into a prime (1812479131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 29829 + ... + 67191.

It is an arithmetic number, because the mean of its divisors is an integer number (41530086).

Almost surely, 2^1812479130 is an apocalyptic number.

1812479130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812479130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2990166192).

1812479130 is an abundant number, since it is smaller than the sum of its proper divisors (4167853254).

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

1812479130 is a wasteful number, since it uses less digits than its factorization.

1812479130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37401 (or 37391 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1812479130 is about 42573.2208083908. The cubic root of 1812479130 is about 1219.2450605737.

The spelling of 1812479130 in words is "one billion, eight hundred twelve million, four hundred seventy-nine thousand, one hundred thirty".