1841356642 has 8 divisors (see below), whose sum is σ = 2762578476. Its totient is φ = 920497152.

The previous prime is 1841356637. The next prime is 1841356661. The reversal of 1841356642 is 2466531481.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1831925601 + 9431041 = 42801^2 + 3071^2 .

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 = 1841356595 and 1841356604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77503 + ... + 98434.

Almost surely, 2^1841356642 is an apocalyptic number.

1841356642 is a deficient number, since it is larger than the sum of its proper divisors (921221834).

1841356642 is a wasteful number, since it uses less digits than its factorization.

1841356642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181172.

The product of its digits is 138240, while the sum is 40.

The square root of 1841356642 is about 42911.0317051455. The cubic root of 1841356642 is about 1225.6862221000.

The spelling of 1841356642 in words is "one billion, eight hundred forty-one million, three hundred fifty-six thousand, six hundred forty-two".