1409891457193 has 4 divisors (see below), whose sum is σ = 1413338624980. Its totient is φ = 1406444289408.

The previous prime is 1409891457187. The next prime is 1409891457209. The reversal of 1409891457193 is 3917541989041.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1289251244304 + 120640212889 = 1135452^2 + 347333^2 .

It is a cyclic number.

It is not a de Polignac number, because 1409891457193 - 2⁹ = 1409891456681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1409591457193) 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, 1723583280 + ... + 1723584097.

It is an arithmetic number, because the mean of its divisors is an integer number (353334656245).

Almost surely, 2^{1409891457193} is an apocalyptic number.

It is an amenable number.

1409891457193 is a deficient number, since it is larger than the sum of its proper divisors (3447167787).

1409891457193 is an equidigital number, since it uses as much as digits as its factorization.

1409891457193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447167786.

The product of its (nonzero) digits is 9797760, while the sum is 61.

The spelling of 1409891457193 in words is "one trillion, four hundred nine billion, eight hundred ninety-one million, four hundred fifty-seven thousand, one hundred ninety-three".