19509144230 has 16 divisors (see below), whose sum is σ = 35236316304. Its totient is φ = 7777022880.

The previous prime is 19509144119. The next prime is 19509144269. The reversal of 19509144230 is 3244190591.

It is a congruent number.

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, 3326276 + ... + 3332135.

It is an arithmetic number, because the mean of its divisors is an integer number (2202269769).

Almost surely, 2^19509144230 is an apocalyptic number.

19509144230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19509144230 is a deficient number, since it is larger than the sum of its proper divisors (15727172074).

19509144230 is a wasteful number, since it uses less digits than its factorization.

19509144230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6658711.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 19509144230 in words is "nineteen billion, five hundred nine million, one hundred forty-four thousand, two hundred thirty".