1320534478 has 8 divisors (see below), whose sum is σ = 2029114080. Its totient is φ = 644163120.

The previous prime is 1320534433. The next prime is 1320534487. The reversal of 1320534478 is 8744350231.

It is a happy number.

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

It is a super-2 number, since 2×1320534478² = 3487622615173464968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8051958 + ... + 8052121.

It is an arithmetic number, because the mean of its divisors is an integer number (253639260).

Almost surely, 2^1320534478 is an apocalyptic number.

1320534478 is a deficient number, since it is larger than the sum of its proper divisors (708579602).

1320534478 is a wasteful number, since it uses less digits than its factorization.

1320534478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16104122.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 1320534478 is about 36339.1590161357. The cubic root of 1320534478 is about 1097.1093464897.

The spelling of 1320534478 in words is "one billion, three hundred twenty million, five hundred thirty-four thousand, four hundred seventy-eight".