1327128445 has 16 divisors (see below), whose sum is σ = 1645074432. Its totient is φ = 1026737280.

The previous prime is 1327128373. The next prime is 1327128461. The reversal of 1327128445 is 5448217231.

It is not a de Polignac number, because 1327128445 - 2¹⁵ = 1327095677 is a prime.

It is a super-2 number, since 2×1327128445² = 3522539819056236050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367569 + ... + 371161.

It is an arithmetic number, because the mean of its divisors is an integer number (102817152).

Almost surely, 2^1327128445 is an apocalyptic number.

It is an amenable number.

1327128445 is a deficient number, since it is larger than the sum of its proper divisors (317945987).

1327128445 is a wasteful number, since it uses less digits than its factorization.

1327128445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6012.

The product of its digits is 53760, while the sum is 37.

The square root of 1327128445 is about 36429.7741552154. The cubic root of 1327128445 is about 1098.9324201428.

The spelling of 1327128445 in words is "one billion, three hundred twenty-seven million, one hundred twenty-eight thousand, four hundred forty-five".