2158203642 has 16 divisors (see below), whose sum is σ = 4933036992. Its totient is φ = 616629600.

The previous prime is 2158203617. The next prime is 2158203679. The reversal of 2158203642 is 2463028512.

It is a super-3 number, since 3×2158203642³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25692859 + ... + 25692942.

It is an arithmetic number, because the mean of its divisors is an integer number (308314812).

Almost surely, 2^2158203642 is an apocalyptic number.

2158203642 is an abundant number, since it is smaller than the sum of its proper divisors (2774833350).

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

2158203642 is a wasteful number, since it uses less digits than its factorization.

2158203642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51385813.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 2158203642 is about 46456.4703997193. The cubic root of 2158203642 is about 1292.3023687090.

The spelling of 2158203642 in words is "two billion, one hundred fifty-eight million, two hundred three thousand, six hundred forty-two".