128961803 has 8 divisors (see below), whose sum is σ = 129991680. Its totient is φ = 127935720.

The previous prime is 128961757. The next prime is 128961809. The reversal of 128961803 is 308169821.

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 128961803 - 2⁶ = 128961739 is a prime.

It is a super-2 number, since 2×128961803² = 33262293266021618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128961809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129638 + ... + 130628.

It is an arithmetic number, because the mean of its divisors is an integer number (16248960).

Almost surely, 2^128961803 is an apocalyptic number.

128961803 is a deficient number, since it is larger than the sum of its proper divisors (1029877).

128961803 is an equidigital number, since it uses as much as digits as its factorization.

128961803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 128961803 is about 11356.1350379431. The cubic root of 128961803 is about 505.2275587844.

The spelling of 128961803 in words is "one hundred twenty-eight million, nine hundred sixty-one thousand, eight hundred three".