19806130 has 32 divisors (see below), whose sum is σ = 37195200. Its totient is φ = 7584192.

The previous prime is 19806119. The next prime is 19806131. The reversal of 19806130 is 3160891.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19806131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47061 + ... + 47479.

It is an arithmetic number, because the mean of its divisors is an integer number (1162350).

Almost surely, 2^19806130 is an apocalyptic number.

19806130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19806130 is a deficient number, since it is larger than the sum of its proper divisors (17389070).

19806130 is a wasteful number, since it uses less digits than its factorization.

19806130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 19806130 is about 4450.4078464788. The cubic root of 19806130 is about 270.5618387553.

The spelling of 19806130 in words is "nineteen million, eight hundred six thousand, one hundred thirty".