128861083 has 4 divisors (see below), whose sum is σ = 138773488. Its totient is φ = 118948680.

The previous prime is 128861081. The next prime is 128861093. The reversal of 128861083 is 380168821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128861083 - 2¹ = 128861081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128861081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4956183 + ... + 4956208.

It is an arithmetic number, because the mean of its divisors is an integer number (34693372).

Almost surely, 2^128861083 is an apocalyptic number.

128861083 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

128861083 is a deficient number, since it is larger than the sum of its proper divisors (9912405).

128861083 is an equidigital number, since it uses as much as digits as its factorization.

128861083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9912404.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 128861083 is about 11351.6995643824. The cubic root of 128861083 is about 505.0959958672.

The spelling of 128861083 in words is "one hundred twenty-eight million, eight hundred sixty-one thousand, eighty-three".