1361239647 has 8 divisors (see below), whose sum is σ = 1859254320. Its totient is φ = 885359040.

The previous prime is 1361239639. The next prime is 1361239661. The reversal of 1361239647 is 7469321631.

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

It is not a de Polignac number, because 1361239647 - 2³ = 1361239639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1361239599 and 1361239608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361239637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5533372 + ... + 5533617.

It is an arithmetic number, because the mean of its divisors is an integer number (232406790).

Almost surely, 2^1361239647 is an apocalyptic number.

1361239647 is a deficient number, since it is larger than the sum of its proper divisors (498014673).

1361239647 is a wasteful number, since it uses less digits than its factorization.

1361239647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11067033.

The product of its digits is 163296, while the sum is 42.

The square root of 1361239647 is about 36894.9813253781. The cubic root of 1361239647 is about 1108.2681775907.

The spelling of 1361239647 in words is "one billion, three hundred sixty-one million, two hundred thirty-nine thousand, six hundred forty-seven".