19845130 has 16 divisors (see below), whose sum is σ = 36307944. Its totient is φ = 7807680.

The previous prime is 19845127. The next prime is 19845143. The reversal of 19845130 is 3154891.

It can be written as a sum of positive squares in 4 ways, for example, as 8128201 + 11716929 = 2851^2 + 3423^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19845092 and 19845101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15657 + ... + 16876.

Almost surely, 2^19845130 is an apocalyptic number.

19845130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19845130 is a deficient number, since it is larger than the sum of its proper divisors (16462814).

19845130 is a wasteful number, since it uses less digits than its factorization.

19845130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32601.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 19845130 is about 4454.7873125437. The cubic root of 19845130 is about 270.7393089527.

The spelling of 19845130 in words is "nineteen million, eight hundred forty-five thousand, one hundred thirty".