1328955507 has 12 divisors (see below), whose sum is σ = 2094111864. Its totient is φ = 805427520.

The previous prime is 1328955497. The next prime is 1328955517. The reversal of 1328955507 is 7055598231.

1328955507 is a `hidden beast` number, since 1 + 3 + 2 + 8 + 95 + 550 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (1328955497) and next prime (1328955517).

It is not a de Polignac number, because 1328955507 - 2⁴ = 1328955491 is a prime.

It is a super-2 number, since 2×1328955507² = 3532245479171254098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1328955517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6711798 + ... + 6711995.

It is an arithmetic number, because the mean of its divisors is an integer number (174509322).

Almost surely, 2^1328955507 is an apocalyptic number.

1328955507 is a deficient number, since it is larger than the sum of its proper divisors (765156357).

1328955507 is a wasteful number, since it uses less digits than its factorization.

1328955507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13423810 (or 13423807 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The square root of 1328955507 is about 36454.8420240714. The cubic root of 1328955507 is about 1099.4364901614.

The spelling of 1328955507 in words is "one billion, three hundred twenty-eight million, nine hundred fifty-five thousand, five hundred seven".