1493147355905 has 4 divisors (see below), whose sum is σ = 1791776827092. Its totient is φ = 1194517884720.

The previous prime is 1493147355893. The next prime is 1493147355907. The reversal of 1493147355905 is 5095537413941.

It is a happy number.

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 160101616129 + 1333045739776 = 400127^2 + 1154576^2 .

It is not a de Polignac number, because 1493147355905 - 2¹² = 1493147351809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1493147355907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149314735586 + ... + 149314735595.

It is an arithmetic number, because the mean of its divisors is an integer number (447944206773).

Almost surely, 2^{1493147355905} is an apocalyptic number.

It is an amenable number.

1493147355905 is a deficient number, since it is larger than the sum of its proper divisors (298629471187).

1493147355905 is an equidigital number, since it uses as much as digits as its factorization.

1493147355905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298629471186.

The product of its (nonzero) digits is 10206000, while the sum is 56.

The spelling of 1493147355905 in words is "one trillion, four hundred ninety-three billion, one hundred forty-seven million, three hundred fifty-five thousand, nine hundred five".