1861190022 has 64 divisors (see below), whose sum is σ = 4001344704. Its totient is φ = 575078400.

The previous prime is 1861190017. The next prime is 1861190033. The reversal of 1861190022 is 2200911681.

It is a happy number.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 3096522 + ... + 3097122.

It is an arithmetic number, because the mean of its divisors is an integer number (62521011).

Almost surely, 2^1861190022 is an apocalyptic number.

1861190022 is an abundant number, since it is smaller than the sum of its proper divisors (2140154682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1861190022 is a wasteful number, since it uses less digits than its factorization.

1861190022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1861190022 is about 43141.5115868696. The cubic root of 1861190022 is about 1230.0711664818.

The spelling of 1861190022 in words is "one billion, eight hundred sixty-one million, one hundred ninety thousand, twenty-two".