2164397558 has 4 divisors (see below), whose sum is σ = 3246596340. Its totient is φ = 1082198778.

The previous prime is 2164397539. The next prime is 2164397567. The reversal of 2164397558 is 8557934612.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541099388 + ... + 541099391.

It is an arithmetic number, because the mean of its divisors is an integer number (811649085).

Almost surely, 2^2164397558 is an apocalyptic number.

2164397558 is a deficient number, since it is larger than the sum of its proper divisors (1082198782).

2164397558 is a wasteful number, since it uses less digits than its factorization.

2164397558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082198781.

The product of its digits is 1814400, while the sum is 50.

The square root of 2164397558 is about 46523.0862905719. The cubic root of 2164397558 is about 1293.5374648715.

The spelling of 2164397558 in words is "two billion, one hundred sixty-four million, three hundred ninety-seven thousand, five hundred fifty-eight".