2158308936 has 64 divisors (see below), whose sum is σ = 6851779200. Its totient is φ = 616659264.

The previous prime is 2158308881. The next prime is 2158308959. The reversal of 2158308936 is 6398038512.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2158308891 and 2158308900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 712215 + ... + 715238.

It is an arithmetic number, because the mean of its divisors is an integer number (107059050).

Almost surely, 2^2158308936 is an apocalyptic number.

It is an amenable number.

2158308936 is an abundant number, since it is smaller than the sum of its proper divisors (4693470264).

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

2158308936 is a wasteful number, since it uses less digits than its factorization.

2158308936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427475 (or 1427465 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 2158308936 is about 46457.6036403084. The cubic root of 2158308936 is about 1292.3233845622.

The spelling of 2158308936 in words is "two billion, one hundred fifty-eight million, three hundred eight thousand, nine hundred thirty-six".