1810672812 has 48 divisors (see below), whose sum is σ = 5055443680. Its totient is φ = 557129664.

The previous prime is 1810672783. The next prime is 1810672813. The reversal of 1810672812 is 2182760181.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1810672813) 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, 643423 + ... + 646230.

Almost surely, 2^1810672812 is an apocalyptic number.

1810672812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1810672812 is an abundant number, since it is smaller than the sum of its proper divisors (3244770868).

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

1810672812 is a wasteful number, since it uses less digits than its factorization.

1810672812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289679 (or 1289671 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 1810672812 is about 42552.0012690355. The cubic root of 1810672812 is about 1218.8398924465.

The spelling of 1810672812 in words is "one billion, eight hundred ten million, six hundred seventy-two thousand, eight hundred twelve".