1820700001 has 8 divisors (see below), whose sum is σ = 1851767144. Its totient is φ = 1789672320.

The previous prime is 1820699989. The next prime is 1820700019. The reversal of 1820700001 is 1000070281.

It can be written as a sum of positive squares in 4 ways, for example, as 116661601 + 1704038400 = 10801^2 + 41280^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1820700001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1820700031) 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, 92071 + ... + 110083.

It is an arithmetic number, because the mean of its divisors is an integer number (231470893).

Almost surely, 2^1820700001 is an apocalyptic number.

It is an amenable number.

1820700001 is a deficient number, since it is larger than the sum of its proper divisors (31067143).

1820700001 is a wasteful number, since it uses less digits than its factorization.

1820700001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19731.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 1820700001 is about 42669.6613649558. The cubic root of 1820700001 is about 1221.0856592849.

Adding to 1820700001 its reverse (1000070281), we get a palindrome (2820770282).

The spelling of 1820700001 in words is "one billion, eight hundred twenty million, seven hundred thousand, one".