1816142424 has 24 divisors (see below), whose sum is σ = 4540878060. Its totient is φ = 605311216.

The previous prime is 1816142423. The next prime is 1816142443. The reversal of 1816142424 is 4242416181.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1816142423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204427 + ... + 213125.

Almost surely, 2^1816142424 is an apocalyptic number.

It is an amenable number.

1816142424 is an abundant number, since it is smaller than the sum of its proper divisors (2724735636).

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

1816142424 is an frugal number, since it uses more digits than its factorization.

1816142424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17407 (or 8704 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 1816142424 is about 42616.2225449417. Note that the first 3 decimals coincide. The cubic root of 1816142424 is about 1220.0659339086.

The spelling of 1816142424 in words is "one billion, eight hundred sixteen million, one hundred forty-two thousand, four hundred twenty-four".