1328518947 has 32 divisors (see below), whose sum is σ = 2065485312. Its totient is φ = 743871744.

The previous prime is 1328518943. The next prime is 1328518957. The reversal of 1328518947 is 7498158231.

It is not a de Polignac number, because 1328518947 - 2² = 1328518943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1328518896 and 1328518905.

It is not an unprimeable number, because it can be changed into a prime (1328518943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274783 + ... + 279575.

It is an arithmetic number, because the mean of its divisors is an integer number (64546416).

Almost surely, 2^1328518947 is an apocalyptic number.

1328518947 is a deficient number, since it is larger than the sum of its proper divisors (736966365).

1328518947 is a wasteful number, since it uses less digits than its factorization.

1328518947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5067.

The product of its digits is 483840, while the sum is 48.

The square root of 1328518947 is about 36448.8538502927. The cubic root of 1328518947 is about 1099.3160892005.

The spelling of 1328518947 in words is "one billion, three hundred twenty-eight million, five hundred eighteen thousand, nine hundred forty-seven".