1361457847 has 4 divisors (see below), whose sum is σ = 1363104936. Its totient is φ = 1359810760.

The previous prime is 1361457829. The next prime is 1361457871. The reversal of 1361457847 is 7487541631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1361457847 - 2²³ = 1353069239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1361457797 and 1361457806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361457817) 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, 822304 + ... + 823957.

It is an arithmetic number, because the mean of its divisors is an integer number (340776234).

Almost surely, 2^1361457847 is an apocalyptic number.

1361457847 is a deficient number, since it is larger than the sum of its proper divisors (1647089).

1361457847 is an equidigital number, since it uses as much as digits as its factorization.

1361457847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647088.

The product of its digits is 564480, while the sum is 46.

The square root of 1361457847 is about 36897.9382486339. The cubic root of 1361457847 is about 1108.3273910674.

The spelling of 1361457847 in words is "one billion, three hundred sixty-one million, four hundred fifty-seven thousand, eight hundred forty-seven".