19980010 has 16 divisors (see below), whose sum is σ = 36098856. Its totient is φ = 7962048.

The previous prime is 19979987. The next prime is 19980019. The reversal of 19980010 is 1008991.

It can be written as a sum of positive squares in 4 ways, for example, as 15992001 + 3988009 = 3999^2 + 1997^2 .

It is not an unprimeable number, because it can be changed into a prime (19980019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 837 + ... + 6376.

Almost surely, 2^19980010 is an apocalyptic number.

19980010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19980010 is a deficient number, since it is larger than the sum of its proper divisors (16118846).

19980010 is a wasteful number, since it uses less digits than its factorization.

19980010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7497.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 19980010 is about 4469.9004463187. The cubic root of 19980010 is about 271.3512961658.

The spelling of 19980010 in words is "nineteen million, nine hundred eighty thousand, ten".