2158809088 has 26 divisors (see below), whose sum is σ = 4317099314. Its totient is φ = 1079402496.

The previous prime is 2158809061. The next prime is 2158809131. The reversal of 2158809088 is 8809088512.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1203257344 + 955551744 = 34688^2 + 30912^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259431 + ... + 267622.

Almost surely, 2^2158809088 is an apocalyptic number.

It is an amenable number.

2158809088 is a deficient number, since it is larger than the sum of its proper divisors (2158290226).

2158809088 is an frugal number, since it uses more digits than its factorization.

2158809088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527077 (or 527055 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 49.

The square root of 2158809088 is about 46462.9862148356. The cubic root of 2158809088 is about 1292.4232016294.

The spelling of 2158809088 in words is "two billion, one hundred fifty-eight million, eight hundred nine thousand, eighty-eight".