1353356945 has 4 divisors (see below), whose sum is σ = 1624028340. Its totient is φ = 1082685552.

The previous prime is 1353356933. The next prime is 1353356951. The reversal of 1353356945 is 5496533531.

It is a happy number.

It is a Cunningham number, because it is equal to 36788²+1.

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 487173184 + 866183761 = 22072^2 + 29431^2 .

It is a cyclic number.

It is not a de Polignac number, because 1353356945 - 2²⁶ = 1286248081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1353356896 and 1353356905.

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, 135335690 + ... + 135335699.

It is an arithmetic number, because the mean of its divisors is an integer number (406007085).

Almost surely, 2^1353356945 is an apocalyptic number.

It is an amenable number.

1353356945 is a deficient number, since it is larger than the sum of its proper divisors (270671395).

1353356945 is an equidigital number, since it uses as much as digits as its factorization.

1353356945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270671394.

The product of its digits is 729000, while the sum is 44.

The square root of 1353356945 is about 36788.0000135914. Note that the first 4 decimals coincide. The cubic root of 1353356945 is about 1106.1247721462.

The spelling of 1353356945 in words is "one billion, three hundred fifty-three million, three hundred fifty-six thousand, nine hundred forty-five".