19681010 has 16 divisors (see below), whose sum is σ = 35683200. Its totient is φ = 7815216.

The previous prime is 19681007. The next prime is 19681021. The reversal of 19681010 is 1018691.

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, 5690 + ... + 8469.

It is an arithmetic number, because the mean of its divisors is an integer number (2230200).

Almost surely, 2^19681010 is an apocalyptic number.

19681010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19681010 is a deficient number, since it is larger than the sum of its proper divisors (16002190).

19681010 is a wasteful number, since it uses less digits than its factorization.

19681010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14305.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 19681010 is about 4436.3284368946. The cubic root of 19681010 is about 269.9909004707.

The spelling of 19681010 in words is "nineteen million, six hundred eighty-one thousand, ten".