1328358881 has 8 divisors (see below), whose sum is σ = 1377874080. Its totient is φ = 1279690272.

The previous prime is 1328358841. The next prime is 1328358887. The reversal of 1328358881 is 1888538231.

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 1328358881 - 2¹⁰ = 1328357857 is a prime.

It is a super-2 number, since 2×1328358881² = 3529074633463144322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1328358887) 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, 208451 + ... + 214728.

It is an arithmetic number, because the mean of its divisors is an integer number (172234260).

Almost surely, 2^1328358881 is an apocalyptic number.

It is an amenable number.

1328358881 is a deficient number, since it is larger than the sum of its proper divisors (49515199).

1328358881 is an equidigital number, since it uses as much as digits as its factorization.

1328358881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423295.

The product of its digits is 368640, while the sum is 47.

The square root of 1328358881 is about 36446.6580223757. The cubic root of 1328358881 is about 1099.2719372279.

The spelling of 1328358881 in words is "one billion, three hundred twenty-eight million, three hundred fifty-eight thousand, eight hundred eighty-one".