1813628369 has 8 divisors (see below), whose sum is σ = 2076842880. Its totient is φ = 1551445056.

The previous prime is 1813628363. The next prime is 1813628441. The reversal of 1813628369 is 9638263181.

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

It is not a de Polignac number, because 1813628369 - 2⁴ = 1813628353 is a prime.

It is a super-2 number, since 2×1813628369² = 6578495721683200322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1813628363) 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, 254024 + ... + 261065.

It is an arithmetic number, because the mean of its divisors is an integer number (259605360).

Almost surely, 2^1813628369 is an apocalyptic number.

It is an amenable number.

1813628369 is a deficient number, since it is larger than the sum of its proper divisors (263214511).

1813628369 is an equidigital number, since it uses as much as digits as its factorization.

1813628369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515599.

The product of its digits is 373248, while the sum is 47.

The square root of 1813628369 is about 42586.7158747889. The cubic root of 1813628369 is about 1219.5027017793.

The spelling of 1813628369 in words is "one billion, eight hundred thirteen million, six hundred twenty-eight thousand, three hundred sixty-nine".