2689428155 has 16 divisors (see below), whose sum is σ = 3247405824. Its totient is φ = 2138179680.

The previous prime is 2689428151. The next prime is 2689428197. The reversal of 2689428155 is 5518249862.

It is a happy number.

2689428155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2689428155 - 2² = 2689428151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2689428151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 930122 + ... + 933008.

It is an arithmetic number, because the mean of its divisors is an integer number (202962864).

Almost surely, 2^2689428155 is an apocalyptic number.

2689428155 is a deficient number, since it is larger than the sum of its proper divisors (557977669).

2689428155 is a wasteful number, since it uses less digits than its factorization.

2689428155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986.

The product of its digits is 1382400, while the sum is 50.

The square root of 2689428155 is about 51859.6968271123. The cubic root of 2689428155 is about 1390.6568596362.

The spelling of 2689428155 in words is "two billion, six hundred eighty-nine million, four hundred twenty-eight thousand, one hundred fifty-five".