1816934148 has 18 divisors (see below), whose sum is σ = 4592805854. Its totient is φ = 605644704.

The previous prime is 1816934113. The next prime is 1816934167. The reversal of 1816934148 is 8414396181.

It can be written as a sum of positive squares in only one way, i.e., 1407600324 + 409333824 = 37518^2 + 20232^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25235161 + ... + 25235232.

Almost surely, 2^1816934148 is an apocalyptic number.

1816934148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1816934148 is an abundant number, since it is smaller than the sum of its proper divisors (2775871706).

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

1816934148 is a wasteful number, since it uses less digits than its factorization.

1816934148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50470403 (or 50470398 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 1816934148 is about 42625.5105306670. The cubic root of 1816934148 is about 1220.2431988517.

The spelling of 1816934148 in words is "one billion, eight hundred sixteen million, nine hundred thirty-four thousand, one hundred forty-eight".