19460505947 has 4 divisors (see below), whose sum is σ = 19465462920. Its totient is φ = 19455548976.

The previous prime is 19460505901. The next prime is 19460505949. The reversal of 19460505947 is 74950506491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19460505947 - 2¹⁴ = 19460489563 is a prime.

It is a super-2 number, since 2×19460505947² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19460505895 and 19460505904.

It is not an unprimeable number, because it can be changed into a prime (19460505949) 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, 2472593 + ... + 2480450.

It is an arithmetic number, because the mean of its divisors is an integer number (4866365730).

Almost surely, 2^19460505947 is an apocalyptic number.

19460505947 is a deficient number, since it is larger than the sum of its proper divisors (4956973).

19460505947 is an equidigital number, since it uses as much as digits as its factorization.

19460505947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4956972.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 19460505947 in words is "nineteen billion, four hundred sixty million, five hundred five thousand, nine hundred forty-seven".