2158038873 has 12 divisors (see below), whose sum is σ = 3129023040. Its totient is φ = 1433220696.

The previous prime is 2158038863. The next prime is 2158038881. The reversal of 2158038873 is 3788308512.

It is a de Polignac number, because none of the positive numbers 2^k-2158038873 is a prime.

It is a super-2 number, since 2×2158038873² = 9314263554758220258, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2158038863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 453493 + ... + 458226.

It is an arithmetic number, because the mean of its divisors is an integer number (260751920).

Almost surely, 2^2158038873 is an apocalyptic number.

It is an amenable number.

2158038873 is a deficient number, since it is larger than the sum of its proper divisors (970984167).

2158038873 is a wasteful number, since it uses less digits than its factorization.

2158038873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911988 (or 911985 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 2158038873 is about 46454.6969961058. The cubic root of 2158038873 is about 1292.2694807424.

It can be divided in two parts, 215803 and 8873, that added together give a square (224676 = 474²).

The spelling of 2158038873 in words is "two billion, one hundred fifty-eight million, thirty-eight thousand, eight hundred seventy-three".