1813486428 has 192 divisors, whose sum is σ = 5351270400. Its totient is φ = 526901760.

The previous prime is 1813486421. The next prime is 1813486447. The reversal of 1813486428 is 8246843181.

1813486428 is a `hidden beast` number, since 18 + 134 + 86 + 428 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813486421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2873673 + ... + 2874303.

It is an arithmetic number, because the mean of its divisors is an integer number (27871200).

Almost surely, 2^1813486428 is an apocalyptic number.

1813486428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1813486428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2675635200).

1813486428 is an abundant number, since it is smaller than the sum of its proper divisors (3537783972).

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

1813486428 is a wasteful number, since it uses less digits than its factorization.

1813486428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 761 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 1813486428 is about 42585.0493483335. The cubic root of 1813486428 is about 1219.4708867445.

The spelling of 1813486428 in words is "one billion, eight hundred thirteen million, four hundred eighty-six thousand, four hundred twenty-eight".