19999102 has 16 divisors (see below), whose sum is σ = 30492000. Its totient is φ = 9836640.

The previous prime is 19999069. The next prime is 19999117. The reversal of 19999102 is 20199991.

It is a congruent number.

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, 43152 + ... + 43612.

It is an arithmetic number, because the mean of its divisors is an integer number (1905750).

Almost surely, 2^19999102 is an apocalyptic number.

19999102 is a deficient number, since it is larger than the sum of its proper divisors (10492898).

19999102 is a wasteful number, since it uses less digits than its factorization.

19999102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771.

The product of its (nonzero) digits is 13122, while the sum is 40.

The square root of 19999102 is about 4472.0355544204. The cubic root of 19999102 is about 271.4376990203.

The spelling of 19999102 in words is "nineteen million, nine hundred ninety-nine thousand, one hundred two".