1351246045 has 4 divisors (see below), whose sum is σ = 1621495260. Its totient is φ = 1080996832.

The previous prime is 1351246033. The next prime is 1351246063. The reversal of 1351246045 is 5406421531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5406421531 = 7 ⋅772345933.

It can be written as a sum of positive squares in 2 ways, for example, as 497379204 + 853866841 = 22302^2 + 29221^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351246045 - 2¹⁵ = 1351213277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1351245998 and 1351246016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135124600 + ... + 135124609.

It is an arithmetic number, because the mean of its divisors is an integer number (405373815).

Almost surely, 2^1351246045 is an apocalyptic number.

It is an amenable number.

1351246045 is a deficient number, since it is larger than the sum of its proper divisors (270249215).

1351246045 is an equidigital number, since it uses as much as digits as its factorization.

1351246045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270249214.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1351246045 is about 36759.2987555530. The cubic root of 1351246045 is about 1105.5493797717.

Adding to 1351246045 its reverse (5406421531), we get a palindrome (6757667576).

The spelling of 1351246045 in words is "one billion, three hundred fifty-one million, two hundred forty-six thousand, forty-five".