2159311738 has 4 divisors (see below), whose sum is σ = 3238967610. Its totient is φ = 1079655868.

The previous prime is 2159311717. The next prime is 2159311757. The reversal of 2159311738 is 8371139512.

2159311738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1432092649 + 727219089 = 37843^2 + 26967^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2159311738.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539827933 + ... + 539827936.

Almost surely, 2^2159311738 is an apocalyptic number.

2159311738 is a deficient number, since it is larger than the sum of its proper divisors (1079655872).

2159311738 is a wasteful number, since it uses less digits than its factorization.

2159311738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079655871.

The product of its digits is 45360, while the sum is 40.

The square root of 2159311738 is about 46468.3950443740. The cubic root of 2159311738 is about 1292.5235016996.

The spelling of 2159311738 in words is "two billion, one hundred fifty-nine million, three hundred eleven thousand, seven hundred thirty-eight".