19695923534 has 16 divisors (see below), whose sum is σ = 33816642048. Its totient is φ = 8428059672.

The previous prime is 19695923531. The next prime is 19695923543. The reversal of 19695923534 is 43532959691.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19695923534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19695923531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1078154 + ... + 1096269.

It is an arithmetic number, because the mean of its divisors is an integer number (2113540128).

Almost surely, 2^19695923534 is an apocalyptic number.

19695923534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19695923534 is a deficient number, since it is larger than the sum of its proper divisors (14120718514).

19695923534 is a wasteful number, since it uses less digits than its factorization.

19695923534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175079.

The product of its digits is 7873200, while the sum is 56.

The spelling of 19695923534 in words is "nineteen billion, six hundred ninety-five million, nine hundred twenty-three thousand, five hundred thirty-four".