1812842523 has 12 divisors (see below), whose sum is σ = 2618926128. Its totient is φ = 1208388240.

The previous prime is 1812842489. The next prime is 1812842579. The reversal of 1812842523 is 3252482181.

It is a happy number.

1812842523 is a `hidden beast` number, since 1 + 8 + 128 + 4 + 2 + 523 = 666.

It is not a de Polignac number, because 1812842523 - 2¹⁴ = 1812826139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1812842023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96858 + ... + 114048.

It is an arithmetic number, because the mean of its divisors is an integer number (218243844).

Almost surely, 2^1812842523 is an apocalyptic number.

1812842523 is a deficient number, since it is larger than the sum of its proper divisors (806083605).

1812842523 is a wasteful number, since it uses less digits than its factorization.

1812842523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28914 (or 28911 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 1812842523 is about 42577.4884534069. The cubic root of 1812842523 is about 1219.3265393073.

The spelling of 1812842523 in words is "one billion, eight hundred twelve million, eight hundred forty-two thousand, five hundred twenty-three".