1319381947 has 8 divisors (see below), whose sum is σ = 1447682544. Its totient is φ = 1194911328.

The previous prime is 1319381939. The next prime is 1319381957. The reversal of 1319381947 is 7491839131.

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

It is not a de Polignac number, because 1319381947 - 2³ = 1319381939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1319381897 and 1319381906.

It is not an unprimeable number, because it can be changed into a prime (1319381957) 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, 956773 + ... + 958150.

It is an arithmetic number, because the mean of its divisors is an integer number (180960318).

Almost surely, 2^1319381947 is an apocalyptic number.

1319381947 is a deficient number, since it is larger than the sum of its proper divisors (128300597).

1319381947 is a wasteful number, since it uses less digits than its factorization.

1319381947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914989.

The product of its digits is 163296, while the sum is 46.

The square root of 1319381947 is about 36323.2975788267. The cubic root of 1319381947 is about 1096.7900766301.

The spelling of 1319381947 in words is "one billion, three hundred nineteen million, three hundred eighty-one thousand, nine hundred forty-seven".