1812464975 has 48 divisors (see below), whose sum is σ = 2400917760. Its totient is φ = 1354425600.

The previous prime is 1812464963. The next prime is 1812464981. The reversal of 1812464975 is 5794642181.

It is a happy number.

It is not a de Polignac number, because 1812464975 - 2⁴ = 1812464959 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

Its product of digits (483840) is a multiple of the sum of its prime factors (560).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5475560 + ... + 5475890.

It is an arithmetic number, because the mean of its divisors is an integer number (50019120).

Almost surely, 2^1812464975 is an apocalyptic number.

1812464975 is a deficient number, since it is larger than the sum of its proper divisors (588452785).

1812464975 is a wasteful number, since it uses less digits than its factorization.

1812464975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 555 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 1812464975 is about 42573.0545650650. The cubic root of 1812464975 is about 1219.2418865677.

The spelling of 1812464975 in words is "one billion, eight hundred twelve million, four hundred sixty-four thousand, nine hundred seventy-five".