1356247745 has 8 divisors (see below), whose sum is σ = 1662125184. Its totient is φ = 1061912944.

The previous prime is 1356247729. The next prime is 1356247807. The reversal of 1356247745 is 5477426531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1356247745 - 2⁴ = 1356247729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1356247696 and 1356247705.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2885399 + ... + 2885868.

It is an arithmetic number, because the mean of its divisors is an integer number (207765648).

Almost surely, 2^1356247745 is an apocalyptic number.

It is an amenable number.

1356247745 is a deficient number, since it is larger than the sum of its proper divisors (305877439).

1356247745 is an equidigital number, since it uses as much as digits as its factorization.

1356247745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5771319.

The product of its digits is 705600, while the sum is 44.

The square root of 1356247745 is about 36827.2690407529. The cubic root of 1356247745 is about 1106.9117809485.

The spelling of 1356247745 in words is "one billion, three hundred fifty-six million, two hundred forty-seven thousand, seven hundred forty-five".