2159788951 has 4 divisors (see below), whose sum is σ = 2160018432. Its totient is φ = 2159559472.

The previous prime is 2159788937. The next prime is 2159788963. The reversal of 2159788951 is 1598879512.

2159788951 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2159788951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2159788892 and 2159788901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159788921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99991 + ... + 119656.

It is an arithmetic number, because the mean of its divisors is an integer number (540004608).

Almost surely, 2^2159788951 is an apocalyptic number.

2159788951 is a deficient number, since it is larger than the sum of its proper divisors (229481).

2159788951 is an equidigital number, since it uses as much as digits as its factorization.

2159788951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229480.

The product of its digits is 1814400, while the sum is 55.

The square root of 2159788951 is about 46473.5295732958. The cubic root of 2159788951 is about 1292.6187116028.

The spelling of 2159788951 in words is "two billion, one hundred fifty-nine million, seven hundred eighty-eight thousand, nine hundred fifty-one".