1841805946 has 4 divisors (see below), whose sum is σ = 2762708922. Its totient is φ = 920902972.

The previous prime is 1841805941. The next prime is 1841805989. The reversal of 1841805946 is 6495081481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1417899025 + 423906921 = 37655^2 + 20589^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1841805896 and 1841805905.

It is not an unprimeable number, because it can be changed into a prime (1841805941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460451485 + ... + 460451488.

Almost surely, 2^1841805946 is an apocalyptic number.

1841805946 is a deficient number, since it is larger than the sum of its proper divisors (920902976).

1841805946 is an equidigital number, since it uses as much as digits as its factorization.

1841805946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920902975.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 1841805946 is about 42916.2666829257. The cubic root of 1841805946 is about 1225.7859060185.

The spelling of 1841805946 in words is "one billion, eight hundred forty-one million, eight hundred five thousand, nine hundred forty-six".