1812646560 has 192 divisors, whose sum is σ = 6014953728. Its totient is φ = 457949184.

The previous prime is 1812646559. The next prime is 1812646571. The reversal of 1812646560 is 656462181.

It is a happy 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, 1246794 + ... + 1248246.

It is an arithmetic number, because the mean of its divisors is an integer number (31327884).

Almost surely, 2^1812646560 is an apocalyptic number.

1812646560 is a gapful number since it is divisible by the number (10) 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 1812646560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3007476864).

1812646560 is an abundant number, since it is smaller than the sum of its proper divisors (4202307168).

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

1812646560 is a wasteful number, since it uses less digits than its factorization.

1812646560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607 (or 1599 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1812646560 is about 42575.1871399293. The cubic root of 1812646560 is about 1219.2826025075.

The spelling of 1812646560 in words is "one billion, eight hundred twelve million, six hundred forty-six thousand, five hundred sixty".