1820377670441 has 16 divisors (see below), whose sum is σ = 2022097620480. Its totient is φ = 1624899553920.

The previous prime is 1820377670437. The next prime is 1820377670443. The reversal of 1820377670441 is 1440767730281.

It is a cyclic number.

It is not a de Polignac number, because 1820377670441 - 2² = 1820377670437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1820377670441.

It is not an unprimeable number, because it can be changed into a prime (1820377670443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4903826 + ... + 5261963.

It is an arithmetic number, because the mean of its divisors is an integer number (126381101280).

Almost surely, 2^{1820377670441} is an apocalyptic number.

1820377670441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1820377670441 is a deficient number, since it is larger than the sum of its proper divisors (201719950039).

1820377670441 is a wasteful number, since it uses less digits than its factorization.

1820377670441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10166096.

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 1820377670441 in words is "one trillion, eight hundred twenty billion, three hundred seventy-seven million, six hundred seventy thousand, four hundred forty-one".