1328653995 has 96 divisors (see below), whose sum is σ = 2381875200. Its totient is φ = 630389760.

The previous prime is 1328653987. The next prime is 1328654003. The reversal of 1328653995 is 5993568231.

It is an interprime number because it is at equal distance from previous prime (1328653987) and next prime (1328654003).

It is not a de Polignac number, because 1328653995 - 2³ = 1328653987 is a prime.

Its product of digits (1749600) is a multiple of the sum of its prime divisors (180).

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 95 ways as a sum of consecutive naturals, for example, 16818366 + ... + 16818444.

It is an arithmetic number, because the mean of its divisors is an integer number (24811200).

Almost surely, 2^1328653995 is an apocalyptic number.

1328653995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1328653995 is a deficient number, since it is larger than the sum of its proper divisors (1053221205).

1328653995 is a wasteful number, since it uses less digits than its factorization.

1328653995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 180 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 51.

The square root of 1328653995 is about 36450.7063717564. The cubic root of 1328653995 is about 1099.3533375487.

The spelling of 1328653995 in words is "one billion, three hundred twenty-eight million, six hundred fifty-three thousand, nine hundred ninety-five".