1820001802 has 16 divisors (see below), whose sum is σ = 2777265792. Its totient is φ = 894310560.

The previous prime is 1820001797. The next prime is 1820001809. The reversal of 1820001802 is 2081000281.

It is not an unprimeable number, because it can be changed into a prime (1820001809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41998 + ... + 73510.

It is an arithmetic number, because the mean of its divisors is an integer number (173579112).

Almost surely, 2^1820001802 is an apocalyptic number.

1820001802 is a deficient number, since it is larger than the sum of its proper divisors (957263990).

1820001802 is a wasteful number, since it uses less digits than its factorization.

1820001802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32013.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1820001802 is about 42661.4791351636. The cubic root of 1820001802 is about 1220.9295526980.

The spelling of 1820001802 in words is "one billion, eight hundred twenty million, one thousand, eight hundred two".