1845351946 has 8 divisors (see below), whose sum is σ = 2768527620. Its totient is φ = 922509408.

The previous prime is 1845351941. The next prime is 1845351961. The reversal of 1845351946 is 6491535481.

It can be written as a sum of positive squares in 2 ways, for example, as 1050732225 + 794619721 = 32415^2 + 28189^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1845351896 and 1845351905.

It is not an unprimeable number, because it can be changed into a prime (1845351941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68941 + ... + 91888.

Almost surely, 2^1845351946 is an apocalyptic number.

1845351946 is a deficient number, since it is larger than the sum of its proper divisors (923175674).

1845351946 is a wasteful number, since it uses less digits than its factorization.

1845351946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166568.

The product of its digits is 518400, while the sum is 46.

The square root of 1845351946 is about 42957.5598236213. The cubic root of 1845351946 is about 1226.5720638126.

The spelling of 1845351946 in words is "one billion, eight hundred forty-five million, three hundred fifty-one thousand, nine hundred forty-six".