2158112966 has 4 divisors (see below), whose sum is σ = 3237169452. Its totient is φ = 1079056482.

The previous prime is 2158112903. The next prime is 2158112969. The reversal of 2158112966 is 6692118512.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158112969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539528240 + ... + 539528243.

It is an arithmetic number, because the mean of its divisors is an integer number (809292363).

Almost surely, 2^2158112966 is an apocalyptic number.

2158112966 is a deficient number, since it is larger than the sum of its proper divisors (1079056486).

2158112966 is a wasteful number, since it uses less digits than its factorization.

2158112966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079056485.

The product of its digits is 51840, while the sum is 41.

The square root of 2158112966 is about 46455.4944651330. The cubic root of 2158112966 is about 1292.2842699457.

The spelling of 2158112966 in words is "two billion, one hundred fifty-eight million, one hundred twelve thousand, nine hundred sixty-six".