2159223770 has 16 divisors (see below), whose sum is σ = 4239930528. Its totient is φ = 785172240.

The previous prime is 2159223733. The next prime is 2159223779. The reversal of 2159223770 is 773229512.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2159223779) 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, 9814544 + ... + 9814763.

It is an arithmetic number, because the mean of its divisors is an integer number (264995658).

Almost surely, 2^2159223770 is an apocalyptic number.

2159223770 is a deficient number, since it is larger than the sum of its proper divisors (2080706758).

2159223770 is a wasteful number, since it uses less digits than its factorization.

2159223770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19629325.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 2159223770 is about 46467.4484989223. The cubic root of 2159223770 is about 1292.5059494630.

The spelling of 2159223770 in words is "two billion, one hundred fifty-nine million, two hundred twenty-three thousand, seven hundred seventy".