19691087230 has 16 divisors (see below), whose sum is σ = 35456440464. Its totient is φ = 7873660800.

The previous prime is 19691087173. The next prime is 19691087231. The reversal of 19691087230 is 3278019691.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19691087231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316827 + ... + 373846.

It is an arithmetic number, because the mean of its divisors is an integer number (2216027529).

Almost surely, 2^19691087230 is an apocalyptic number.

19691087230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19691087230 is a deficient number, since it is larger than the sum of its proper divisors (15765353234).

19691087230 is a wasteful number, since it uses less digits than its factorization.

19691087230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693531.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 19691087230 in words is "nineteen billion, six hundred ninety-one million, eighty-seven thousand, two hundred thirty".