1813852441 has 4 divisors (see below), whose sum is σ = 1817577472. Its totient is φ = 1810127412.

The previous prime is 1813852433. The next prime is 1813852459. The reversal of 1813852441 is 1442583181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1813852441 - 2³ = 1813852433 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 1813852441.

It is not an unprimeable number, because it can be changed into a prime (1813852421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1861785 + ... + 1862758.

It is an arithmetic number, because the mean of its divisors is an integer number (454394368).

Almost surely, 2^1813852441 is an apocalyptic number.

It is an amenable number.

1813852441 is a deficient number, since it is larger than the sum of its proper divisors (3725031).

1813852441 is an equidigital number, since it uses as much as digits as its factorization.

1813852441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3725030.

The product of its digits is 30720, while the sum is 37.

The square root of 1813852441 is about 42589.3465669526. The cubic root of 1813852441 is about 1219.5529224973.

The spelling of 1813852441 in words is "one billion, eight hundred thirteen million, eight hundred fifty-two thousand, four hundred forty-one".