2881128345 has 16 divisors (see below), whose sum is σ = 4610898432. Its totient is φ = 1536237440.

The previous prime is 2881128317. The next prime is 2881128353. The reversal of 2881128345 is 5438211882.

It is not a de Polignac number, because 2881128345 - 2¹⁶ = 2881062809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2881128297 and 2881128306.

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, 50125 + ... + 90965.

It is an arithmetic number, because the mean of its divisors is an integer number (288181152).

Almost surely, 2^2881128345 is an apocalyptic number.

It is an amenable number.

2881128345 is a deficient number, since it is larger than the sum of its proper divisors (1729770087).

2881128345 is a wasteful number, since it uses less digits than its factorization.

2881128345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45552.

The product of its digits is 122880, while the sum is 42.

The square root of 2881128345 is about 53676.1431643519. The cubic root of 2881128345 is about 1422.9431032200.

The spelling of 2881128345 in words is "two billion, eight hundred eighty-one million, one hundred twenty-eight thousand, three hundred forty-five".