1890208196 has 24 divisors (see below), whose sum is σ = 3400389720. Its totient is φ = 918715392.

The previous prime is 1890208169. The next prime is 1890208237. The reversal of 1890208196 is 6918020981.

It can be written as a sum of positive squares in 4 ways, for example, as 427910596 + 1462297600 = 20686^2 + 38240^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174260 + ... + 184788.

It is an arithmetic number, because the mean of its divisors is an integer number (141682905).

Almost surely, 2^1890208196 is an apocalyptic number.

It is an amenable number.

1890208196 is a deficient number, since it is larger than the sum of its proper divisors (1510181524).

1890208196 is a wasteful number, since it uses less digits than its factorization.

1890208196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11783 (or 11781 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 44.

The square root of 1890208196 is about 43476.5246541165. The cubic root of 1890208196 is about 1236.4309869590.

The spelling of 1890208196 in words is "one billion, eight hundred ninety million, two hundred eight thousand, one hundred ninety-six".