1890225170 has 16 divisors (see below), whose sum is σ = 3404564568. Its totient is φ = 755610240.

The previous prime is 1890225163. The next prime is 1890225199. The reversal of 1890225170 is 715220981.

It can be written as a sum of positive squares in 4 ways, for example, as 1778055889 + 112169281 = 42167^2 + 10591^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1890225170.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43211 + ... + 75150.

Almost surely, 2^1890225170 is an apocalyptic number.

1890225170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1890225170 is a deficient number, since it is larger than the sum of its proper divisors (1514339398).

1890225170 is a wasteful number, since it uses less digits than its factorization.

1890225170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119965.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 1890225170 is about 43476.7198624735. The cubic root of 1890225170 is about 1236.4346879828.

The spelling of 1890225170 in words is "one billion, eight hundred ninety million, two hundred twenty-five thousand, one hundred seventy".