1816843546 has 16 divisors (see below), whose sum is σ = 3120359040. Its totient is φ = 777204720.

The previous prime is 1816843541. The next prime is 1816843547. The reversal of 1816843546 is 6453486181.

It is a junction number, because it is equal to n+sod(n) for n = 1816843496 and 1816843505.

It is not an unprimeable number, because it can be changed into a prime (1816843541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112366 + ... + 127513.

It is an arithmetic number, because the mean of its divisors is an integer number (195022440).

Almost surely, 2^1816843546 is an apocalyptic number.

1816843546 is a deficient number, since it is larger than the sum of its proper divisors (1303515494).

1816843546 is a wasteful number, since it uses less digits than its factorization.

1816843546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240429.

The product of its digits is 552960, while the sum is 46.

The square root of 1816843546 is about 42624.4477500882. The cubic root of 1816843546 is about 1220.2229159093. Note that the first 3 decimals are identical.

The spelling of 1816843546 in words is "one billion, eight hundred sixteen million, eight hundred forty-three thousand, five hundred forty-six".