1861080322 has 4 divisors (see below), whose sum is σ = 2791620486. Its totient is φ = 930540160.

The previous prime is 1861080317. The next prime is 1861080337. The reversal of 1861080322 is 2230801681.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2230801681 = 727 ⋅3068503.

It can be written as a sum of positive squares in only one way, i.e., 1059567601 + 801512721 = 32551^2 + 28311^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 465270079 + ... + 465270082.

Almost surely, 2^1861080322 is an apocalyptic number.

1861080322 is a deficient number, since it is larger than the sum of its proper divisors (930540164).

1861080322 is an equidigital number, since it uses as much as digits as its factorization.

1861080322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930540163.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1861080322 is about 43140.2401708660. The cubic root of 1861080322 is about 1230.0469988871.

The spelling of 1861080322 in words is "one billion, eight hundred sixty-one million, eighty thousand, three hundred twenty-two".