19629609806 has 16 divisors (see below), whose sum is σ = 29508222240. Its totient is φ = 9793560480.

The previous prime is 19629609803. The next prime is 19629609833. The reversal of 19629609806 is 60890692691.

It is a super-2 number, since 2×19629609806² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19629609803) 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, 1877000 + ... + 1887428.

It is an arithmetic number, because the mean of its divisors is an integer number (1844263890).

Almost surely, 2^19629609806 is an apocalyptic number.

19629609806 is a deficient number, since it is larger than the sum of its proper divisors (9878612434).

19629609806 is a wasteful number, since it uses less digits than its factorization.

19629609806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12379.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 19629609806 in words is "nineteen billion, six hundred twenty-nine million, six hundred nine thousand, eight hundred six".