19890110 has 16 divisors (see below), whose sum is σ = 35863776. Its totient is φ = 7942368.

The previous prime is 19890107. The next prime is 19890137. The reversal of 19890110 is 1109891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6092 + ... + 8768.

It is an arithmetic number, because the mean of its divisors is an integer number (2241486).

Almost surely, 2^19890110 is an apocalyptic number.

19890110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19890110 is a deficient number, since it is larger than the sum of its proper divisors (15973666).

19890110 is a wasteful number, since it uses less digits than its factorization.

19890110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 19890110 is about 4459.8329565131. The cubic root of 19890110 is about 270.9437027613.

The spelling of 19890110 in words is "nineteen million, eight hundred ninety thousand, one hundred ten".