1860012820 has 24 divisors (see below), whose sum is σ = 3907429344. Its totient is φ = 743738016.

The previous prime is 1860012797. The next prime is 1860012841. The reversal of 1860012820 is 282100681.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 46179 + ... + 76501.

It is an arithmetic number, because the mean of its divisors is an integer number (162809556).

Almost surely, 2^1860012820 is an apocalyptic number.

1860012820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1860012820 is an abundant number, since it is smaller than the sum of its proper divisors (2047416524).

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

1860012820 is a wasteful number, since it uses less digits than its factorization.

1860012820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33399 (or 33397 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1860012820 is about 43127.8659337556. The cubic root of 1860012820 is about 1229.8117719326.

The spelling of 1860012820 in words is "one billion, eight hundred sixty million, twelve thousand, eight hundred twenty".