19692136961 has 4 divisors (see below), whose sum is σ = 22505299392. Its totient is φ = 16878974532.

The previous prime is 19692136951. The next prime is 19692137011. The reversal of 19692136961 is 16963129691.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 19692136961 - 2¹⁴ = 19692120577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19692136931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1406581205 + ... + 1406581218.

It is an arithmetic number, because the mean of its divisors is an integer number (5626324848).

Almost surely, 2^19692136961 is an apocalyptic number.

It is an amenable number.

19692136961 is a deficient number, since it is larger than the sum of its proper divisors (2813162431).

19692136961 is an equidigital number, since it uses as much as digits as its factorization.

19692136961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813162430.

The product of its digits is 944784, while the sum is 53.

The spelling of 19692136961 in words is "nineteen billion, six hundred ninety-two million, one hundred thirty-six thousand, nine hundred sixty-one".