2158780076 has 12 divisors (see below), whose sum is σ = 3976700280. Its totient is φ = 1022580000.

The previous prime is 2158780067. The next prime is 2158780079. The reversal of 2158780076 is 6700878512.

It is not an unprimeable number, because it can be changed into a prime (2158780079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14202425 + ... + 14202576.

It is an arithmetic number, because the mean of its divisors is an integer number (331391690).

Almost surely, 2^2158780076 is an apocalyptic number.

It is an amenable number.

2158780076 is a deficient number, since it is larger than the sum of its proper divisors (1817920204).

2158780076 is a wasteful number, since it uses less digits than its factorization.

2158780076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28405024 (or 28405022 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 44.

The square root of 2158780076 is about 46462.6740082833. The cubic root of 2158780076 is about 1292.4174120253.

The spelling of 2158780076 in words is "two billion, one hundred fifty-eight million, seven hundred eighty thousand, seventy-six".