2158542222 has 16 divisors (see below), whose sum is σ = 4319183952. Its totient is φ = 719164160.

The previous prime is 2158542161. The next prime is 2158542227. The reversal of 2158542222 is 2222458512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158542227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73953 + ... + 98924.

It is an arithmetic number, because the mean of its divisors is an integer number (269948997).

Almost surely, 2^2158542222 is an apocalyptic number.

2158542222 is an abundant number, since it is smaller than the sum of its proper divisors (2160641730).

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

2158542222 is a wasteful number, since it uses less digits than its factorization.

2158542222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174963.

The product of its digits is 25600, while the sum is 33.

The square root of 2158542222 is about 46460.1143132472. The cubic root of 2158542222 is about 1292.3699441760.

The spelling of 2158542222 in words is "two billion, one hundred fifty-eight million, five hundred forty-two thousand, two hundred twenty-two".