1361478947 has 8 divisors (see below), whose sum is σ = 1385289312. Its totient is φ = 1337716800.

The previous prime is 1361478941. The next prime is 1361478959. The reversal of 1361478947 is 7498741631.

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 1361478947 - 2⁴ = 1361478931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1361478895 and 1361478904.

It is not an unprimeable number, because it can be changed into a prime (1361478941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47447 + ... + 70527.

It is an arithmetic number, because the mean of its divisors is an integer number (173161164).

Almost surely, 2^1361478947 is an apocalyptic number.

1361478947 is a deficient number, since it is larger than the sum of its proper divisors (23810365).

1361478947 is an equidigital number, since it uses as much as digits as its factorization.

1361478947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24109.

The product of its digits is 1016064, while the sum is 50.

The square root of 1361478947 is about 36898.2241713609. The cubic root of 1361478947 is about 1108.3331166914. Note that the first 3 decimals are identical.

The spelling of 1361478947 in words is "one billion, three hundred sixty-one million, four hundred seventy-eight thousand, nine hundred forty-seven".