2159723630 has 16 divisors (see below), whose sum is σ = 3888239760. Its totient is φ = 863725632.

The previous prime is 2159723617. The next prime is 2159723677. The reversal of 2159723630 is 363279512.

It is a congruent number.

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, 44801 + ... + 79539.

It is an arithmetic number, because the mean of its divisors is an integer number (243014985).

Almost surely, 2^2159723630 is an apocalyptic number.

2159723630 is a deficient number, since it is larger than the sum of its proper divisors (1728516130).

2159723630 is a wasteful number, since it uses less digits than its factorization.

2159723630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40963.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 2159723630 is about 46472.8267915779. The cubic root of 2159723630 is about 1292.6056800829.

The spelling of 2159723630 in words is "two billion, one hundred fifty-nine million, seven hundred twenty-three thousand, six hundred thirty".