128513803 has 16 divisors (see below), whose sum is σ = 145474560. Its totient is φ = 112507200.

The previous prime is 128513789. The next prime is 128513807. The reversal of 128513803 is 308315821.

It is a cyclic number.

It is not a de Polignac number, because 128513803 - 2¹⁷ = 128382731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128513807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33826 + ... + 37432.

It is an arithmetic number, because the mean of its divisors is an integer number (9092160).

Almost surely, 2^128513803 is an apocalyptic number.

128513803 is a deficient number, since it is larger than the sum of its proper divisors (16960757).

128513803 is a wasteful number, since it uses less digits than its factorization.

128513803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 128513803 is about 11336.3928566365. The cubic root of 128513803 is about 504.6418438821.

The spelling of 128513803 in words is "one hundred twenty-eight million, five hundred thirteen thousand, eight hundred three".