2128458518 has 8 divisors (see below), whose sum is σ = 3236423448. Its totient is φ = 1049650704.

The previous prime is 2128458499. The next prime is 2128458551. The reversal of 2128458518 is 8158548212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7289096 + ... + 7289387.

It is an arithmetic number, because the mean of its divisors is an integer number (404552931).

Almost surely, 2^2128458518 is an apocalyptic number.

2128458518 is a deficient number, since it is larger than the sum of its proper divisors (1107964930).

2128458518 is a wasteful number, since it uses less digits than its factorization.

2128458518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14578558.

The product of its digits is 204800, while the sum is 44.

The square root of 2128458518 is about 46135.2199301141. The cubic root of 2128458518 is about 1286.3378936470.

It can be divided in two parts, 21 and 28458518, that multiplied together give a triangular number (597628878 = T₃₄₅₇₂).

The spelling of 2128458518 in words is "two billion, one hundred twenty-eight million, four hundred fifty-eight thousand, five hundred eighteen".