1861045298 has 16 divisors (see below), whose sum is σ = 3223256064. Its totient is φ = 789367680.

The previous prime is 1861045271. The next prime is 1861045331. The reversal of 1861045298 is 8925401681.

It is a Smith number, since the sum of its digits (44) 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 in 7 ways as a sum of consecutive naturals, for example, 683858 + ... + 686573.

It is an arithmetic number, because the mean of its divisors is an integer number (201453504).

Almost surely, 2^1861045298 is an apocalyptic number.

1861045298 is a deficient number, since it is larger than the sum of its proper divisors (1362210766).

1861045298 is a wasteful number, since it uses less digits than its factorization.

1861045298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370537.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 1861045298 is about 43139.8342370482. The cubic root of 1861045298 is about 1230.0392826813.

The spelling of 1861045298 in words is "one billion, eight hundred sixty-one million, forty-five thousand, two hundred ninety-eight".