1820191001010 has 16 divisors (see below), whose sum is σ = 4368458402496. Its totient is φ = 485384266928.

The previous prime is 1820191001003. The next prime is 1820191001039. The reversal of 1820191001010 is 101001910281.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30336516654 + ... + 30336516713.

It is an arithmetic number, because the mean of its divisors is an integer number (273028650156).

Almost surely, 2^{1820191001010} is an apocalyptic number.

1820191001010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1820191001010 is an abundant number, since it is smaller than the sum of its proper divisors (2548267401486).

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

1820191001010 is a wasteful number, since it uses less digits than its factorization.

1820191001010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60673033377.

The product of its (nonzero) digits is 144, while the sum is 24.

Adding to 1820191001010 its reverse (101001910281), we get a palindrome (1921192911291).

The spelling of 1820191001010 in words is "one trillion, eight hundred twenty billion, one hundred ninety-one million, one thousand, ten".