1828351820 has 24 divisors (see below), whose sum is σ = 3844642704. Its totient is φ = 730368576.

The previous prime is 1828351813. The next prime is 1828351849. The reversal of 1828351820 is 281538281.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45242 + ... + 75521.

It is an arithmetic number, because the mean of its divisors is an integer number (160193446).

Almost surely, 2^1828351820 is an apocalyptic number.

1828351820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1828351820 is an abundant number, since it is smaller than the sum of its proper divisors (2016290884).

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

1828351820 is a wasteful number, since it uses less digits than its factorization.

1828351820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121529 (or 121527 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 1828351820 is about 42759.2308162811. The cubic root of 1828351820 is about 1222.7938791337.

The spelling of 1828351820 in words is "one billion, eight hundred twenty-eight million, three hundred fifty-one thousand, eight hundred twenty".