19609129986 has 32 divisors (see below), whose sum is σ = 39403791360. Its totient is φ = 6505504896.

The previous prime is 19609129973. The next prime is 19609129999. The reversal of 19609129986 is 68992190691.

It is an interprime number because it is at equal distance from previous prime (19609129973) and next prime (19609129999).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1748830 + ... + 1760006.

It is an arithmetic number, because the mean of its divisors is an integer number (1231368480).

Almost surely, 2^19609129986 is an apocalyptic number.

19609129986 is an abundant number, since it is smaller than the sum of its proper divisors (19794661374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19609129986 is a wasteful number, since it uses less digits than its factorization.

19609129986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12538.

The product of its (nonzero) digits is 3779136, while the sum is 60.

The spelling of 19609129986 in words is "nineteen billion, six hundred nine million, one hundred twenty-nine thousand, nine hundred eighty-six".