19470632861 has 4 divisors (see below), whose sum is σ = 20098717824. Its totient is φ = 18842547900.

The previous prime is 19470632833. The next prime is 19470632897. The reversal of 19470632861 is 16823607491.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16823607491 = 449 ⋅37469059.

It is a cyclic number.

It is not a de Polignac number, because 19470632861 - 2¹⁰ = 19470631837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19470602861) 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, 314042435 + ... + 314042496.

It is an arithmetic number, because the mean of its divisors is an integer number (5024679456).

Almost surely, 2^19470632861 is an apocalyptic number.

It is an amenable number.

19470632861 is a deficient number, since it is larger than the sum of its proper divisors (628084963).

19470632861 is an equidigital number, since it uses as much as digits as its factorization.

19470632861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628084962.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 19470632861 in words is "nineteen billion, four hundred seventy million, six hundred thirty-two thousand, eight hundred sixty-one".