1812000537 has 10 divisors (see below), whose sum is σ = 2706815738. Its totient is φ = 1208000304.

The previous prime is 1812000529. The next prime is 1812000577. The reversal of 1812000537 is 7350002181.

1812000537 is a `hidden beast` number, since 1 + 8 + 120 + 0 + 0 + 537 = 666.

It can be written as a sum of positive squares in only one way, i.e., 967458816 + 844541721 = 31104^2 + 29061^2 .

It is not a de Polignac number, because 1812000537 - 2³ = 1812000529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1812000537.

It is not an unprimeable number, because it can be changed into a prime (1812000527) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11185108 + ... + 11185269.

Almost surely, 2^1812000537 is an apocalyptic number.

It is an amenable number.

1812000537 is a deficient number, since it is larger than the sum of its proper divisors (894815201).

1812000537 is an equidigital number, since it uses as much as digits as its factorization.

1812000537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22370389 (or 22370380 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 1812000537 is about 42567.5996152003. The cubic root of 1812000537 is about 1219.1377354722.

The spelling of 1812000537 in words is "one billion, eight hundred twelve million, five hundred thirty-seven", and thus it is an aban number.