128153919 has 16 divisors (see below), whose sum is σ = 172826720. Its totient is φ = 84464640.

The previous prime is 128153899. The next prime is 128153941. The reversal of 128153919 is 919351821.

It is not a de Polignac number, because 128153919 - 2⁵ = 128153887 is a prime.

It is a super-2 number, since 2×128153919² = 32846853910117122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128153989) 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, 112947 + ... + 114075.

It is an arithmetic number, because the mean of its divisors is an integer number (10801670).

Almost surely, 2^128153919 is an apocalyptic number.

128153919 is a deficient number, since it is larger than the sum of its proper divisors (44672801).

128153919 is a wasteful number, since it uses less digits than its factorization.

128153919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530.

The product of its digits is 19440, while the sum is 39.

The square root of 128153919 is about 11320.5087783191. The cubic root of 128153919 is about 504.1703450710.

The spelling of 128153919 in words is "one hundred twenty-eight million, one hundred fifty-three thousand, nine hundred nineteen".