19040136196 has 9 divisors (see below), whose sum is σ = 33320721301. Its totient is φ = 9519930112.

The previous prime is 19040136149. The next prime is 19040136197. The reversal of 19040136196 is 69163104091.

It is a happy number.

The square root of 19040136196 is 137986.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2537136900 + 16502999296 = 50370^2 + 128464^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19040136197) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 241476 + ... + 310468.

Almost surely, 2^19040136196 is an apocalyptic number.

19040136196 is the 137986-th square number.

It is an amenable number.

19040136196 is a deficient number, since it is larger than the sum of its proper divisors (14280585105).

19040136196 is an frugal number, since it uses more digits than its factorization.

19040136196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137990 (or 68995 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 40.

It can be divided in two parts, 19040 and 136196, that added together give a square (155236 = 394²).

The spelling of 19040136196 in words is "nineteen billion, forty million, one hundred thirty-six thousand, one hundred ninety-six".