19420160405 has 8 divisors (see below), whose sum is σ = 23308946232. Its totient is φ = 15532959168.

The previous prime is 19420160401. The next prime is 19420160429. The reversal of 19420160405 is 50406102491.

It can be written as a sum of positive squares in 4 ways, for example, as 393268561 + 19026891844 = 19831^2 + 137938^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19420160405 - 2² = 19420160401 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 (19420160401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369014 + ... + 418343.

It is an arithmetic number, because the mean of its divisors is an integer number (2913618279).

Almost surely, 2^19420160405 is an apocalyptic number.

It is an amenable number.

19420160405 is a deficient number, since it is larger than the sum of its proper divisors (3888785827).

19420160405 is an equidigital number, since it uses as much as digits as its factorization.

19420160405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792295.

The product of its (nonzero) digits is 8640, while the sum is 32.

Adding to 19420160405 its reverse (50406102491), we get a palindrome (69826262896).

The spelling of 19420160405 in words is "nineteen billion, four hundred twenty million, one hundred sixty thousand, four hundred five".