1320770145 has 8 divisors (see below), whose sum is σ = 2113232256. Its totient is φ = 704410736.

The previous prime is 1320770141. The next prime is 1320770153. The reversal of 1320770145 is 5410770231.

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 1320770145 - 2² = 1320770141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320770141) 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, 44025657 + ... + 44025686.

It is an arithmetic number, because the mean of its divisors is an integer number (264154032).

Almost surely, 2^1320770145 is an apocalyptic number.

1320770145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1320770145 is a deficient number, since it is larger than the sum of its proper divisors (792462111).

1320770145 is an equidigital number, since it uses as much as digits as its factorization.

1320770145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88051351.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 1320770145 is about 36342.4014754116. The cubic root of 1320770145 is about 1097.1746072088.

The spelling of 1320770145 in words is "one billion, three hundred twenty million, seven hundred seventy thousand, one hundred forty-five".