1351044005 has 4 divisors (see below), whose sum is σ = 1621252812. Its totient is φ = 1080835200.

The previous prime is 1351043983. The next prime is 1351044007. The reversal of 1351044005 is 5004401531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5004401531 = 7187 ⋅696313.

It can be written as a sum of positive squares in 2 ways, for example, as 471150436 + 879893569 = 21706^2 + 29663^2 .

It is not a de Polignac number, because 1351044005 - 2²⁴ = 1334266789 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 (1351044007) 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, 135104396 + ... + 135104405.

It is an arithmetic number, because the mean of its divisors is an integer number (405313203).

Almost surely, 2^1351044005 is an apocalyptic number.

It is an amenable number.

1351044005 is a deficient number, since it is larger than the sum of its proper divisors (270208807).

1351044005 is an equidigital number, since it uses as much as digits as its factorization.

1351044005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270208806.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1351044005 is about 36756.5505046379. The cubic root of 1351044005 is about 1105.4942759828.

Adding to 1351044005 its reverse (5004401531), we get a palindrome (6355445536).

The spelling of 1351044005 in words is "one billion, three hundred fifty-one million, forty-four thousand, five".