1821068401 has 8 divisors (see below), whose sum is σ = 1900672704. Its totient is φ = 1741499760.

The previous prime is 1821068377. The next prime is 1821068413. The reversal of 1821068401 is 1048601281.

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

It is a cyclic number.

It is not a de Polignac number, because 1821068401 - 2⁷ = 1821068273 is a prime.

It is a super-2 number, since 2×1821068401² = 6632580242241393602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1821068461) 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, 192750 + ... + 201976.

It is an arithmetic number, because the mean of its divisors is an integer number (237584088).

Almost surely, 2^1821068401 is an apocalyptic number.

It is an amenable number.

1821068401 is a deficient number, since it is larger than the sum of its proper divisors (79604303).

1821068401 is an equidigital number, since it uses as much as digits as its factorization.

1821068401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17831.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 1821068401 is about 42673.9780311140. The cubic root of 1821068401 is about 1221.1680117903.

Adding to 1821068401 its reverse (1048601281), we get a palindrome (2869669682).

The spelling of 1821068401 in words is "one billion, eight hundred twenty-one million, sixty-eight thousand, four hundred one".