128168953 has 16 divisors (see below), whose sum is σ = 143721216. Its totient is φ = 113299840.

The previous prime is 128168941. The next prime is 128168969. The reversal of 128168953 is 359861821.

It is a cyclic number.

It is not a de Polignac number, because 128168953 - 2⁵ = 128168921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128168983) 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, 88725 + ... + 90157.

It is an arithmetic number, because the mean of its divisors is an integer number (8982576).

Almost surely, 2^128168953 is an apocalyptic number.

It is an amenable number.

128168953 is a deficient number, since it is larger than the sum of its proper divisors (15552263).

128168953 is a wasteful number, since it uses less digits than its factorization.

128168953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664.

The product of its digits is 103680, while the sum is 43.

The square root of 128168953 is about 11321.1727749381. The cubic root of 128168953 is about 504.1900593871.

The spelling of 128168953 in words is "one hundred twenty-eight million, one hundred sixty-eight thousand, nine hundred fifty-three".