2159788 has 6 divisors (see below), whose sum is σ = 3779636. Its totient is φ = 1079892.

The previous prime is 2159783. The next prime is 2159789. The reversal of 2159788 is 8879512.

It is a self number, because there is not a number n which added to its sum of digits gives 2159788.

It is not an unprimeable number, because it can be changed into a prime (2159783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269970 + ... + 269977.

2^2159788 is an apocalyptic number.

It is an amenable number.

2159788 is a deficient number, since it is larger than the sum of its proper divisors (1619848).

2159788 is a wasteful number, since it uses less digits than its factorization.

2159788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539951 (or 539949 counting only the distinct ones).

The product of its digits is 40320, while the sum is 40.

The square root of 2159788 is about 1469.6217200355. The cubic root of 2159788 is about 129.2618521880.

The spelling of 2159788 in words is "two million, one hundred fifty-nine thousand, seven hundred eighty-eight".