2138958 has 12 divisors (see below), whose sum is σ = 4634448. Its totient is φ = 712980.

The previous prime is 2138909. The next prime is 2138971. The reversal of 2138958 is 8598312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59398 + ... + 59433.

It is an arithmetic number, because the mean of its divisors is an integer number (386204).

2^2138958 is an apocalyptic number.

2138958 is an abundant number, since it is smaller than the sum of its proper divisors (2495490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2138958 is a wasteful number, since it uses less digits than its factorization.

2138958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118839 (or 118836 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2138958 is about 1462.5176922007. The cubic root of 2138958 is about 128.8449552447.

The spelling of 2138958 in words is "two million, one hundred thirty-eight thousand, nine hundred fifty-eight".