1841985946 has 4 divisors (see below), whose sum is σ = 2762978922. Its totient is φ = 920992972.

The previous prime is 1841985941. The next prime is 1841985979. The reversal of 1841985946 is 6495891481.

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., 1841353921 + 632025 = 42911^2 + 795^2 .

It is not an unprimeable number, because it can be changed into a prime (1841985941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460496485 + ... + 460496488.

Almost surely, 2^1841985946 is an apocalyptic number.

1841985946 is a deficient number, since it is larger than the sum of its proper divisors (920992976).

1841985946 is an equidigital number, since it uses as much as digits as its factorization.

1841985946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920992975.

The product of its digits is 2488320, while the sum is 55.

The square root of 1841985946 is about 42918.3637386143. The cubic root of 1841985946 is about 1225.8258368043.

The spelling of 1841985946 in words is "one billion, eight hundred forty-one million, nine hundred eighty-five thousand, nine hundred forty-six".