1328719995 has 48 divisors (see below), whose sum is σ = 2395522272. Its totient is φ = 680762880.

The previous prime is 1328719993. The next prime is 1328720011. The reversal of 1328719995 is 5999178231.

It is not a de Polignac number, because 1328719995 - 2¹ = 1328719993 is a prime.

It is a super-2 number, since 2×1328719995² = 3530993650225600050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1328719993) 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 47 ways as a sum of consecutive naturals, for example, 112407 + ... + 123663.

It is an arithmetic number, because the mean of its divisors is an integer number (49906714).

Almost surely, 2^1328719995 is an apocalyptic number.

1328719995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1328719995 is a deficient number, since it is larger than the sum of its proper divisors (1066802277).

1328719995 is a wasteful number, since it uses less digits than its factorization.

1328719995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11372 (or 11369 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 1328719995 is about 36451.6116927633. The cubic root of 1328719995 is about 1099.3715404616.

The spelling of 1328719995 in words is "one billion, three hundred twenty-eight million, seven hundred nineteen thousand, nine hundred ninety-five".