1820001666970 has 16 divisors (see below), whose sum is σ = 3276057063168. Its totient is φ = 727988652880.

The previous prime is 1820001666913. The next prime is 1820001666971. The reversal of 1820001666970 is 796661000281.

It is a self number, because there is not a number n which added to its sum of digits gives 1820001666970.

It is not an unprimeable number, because it can be changed into a prime (1820001666971) 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, 852094 + ... + 2089513.

It is an arithmetic number, because the mean of its divisors is an integer number (204753566448).

Almost surely, 2^{1820001666970} is an apocalyptic number.

1820001666970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1820001666970 is a deficient number, since it is larger than the sum of its proper divisors (1456055396198).

1820001666970 is a wasteful number, since it uses less digits than its factorization.

1820001666970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003485.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 1820001666970 in words is "one trillion, eight hundred twenty billion, one million, six hundred sixty-six thousand, nine hundred seventy".