1328357145 has 16 divisors (see below), whose sum is σ = 2137660992. Its totient is φ = 704360640.

The previous prime is 1328357143. The next prime is 1328357183. The reversal of 1328357145 is 5417538231.

It is a happy number.

It is not a de Polignac number, because 1328357145 - 2¹ = 1328357143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1328357141) 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 15 ways as a sum of consecutive naturals, for example, 253351 + ... + 258540.

It is an arithmetic number, because the mean of its divisors is an integer number (133603812).

Almost surely, 2^1328357145 is an apocalyptic number.

1328357145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1328357145 is a deficient number, since it is larger than the sum of its proper divisors (809303847).

1328357145 is a wasteful number, since it uses less digits than its factorization.

1328357145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512072.

The product of its digits is 100800, while the sum is 39.

The square root of 1328357145 is about 36446.6342067412. The cubic root of 1328357145 is about 1099.2714583570.

The spelling of 1328357145 in words is "one billion, three hundred twenty-eight million, three hundred fifty-seven thousand, one hundred forty-five".