2789406634 has 24 divisors (see below), whose sum is σ = 4884599268. Its totient is φ = 1191193920.

The previous prime is 2789406617. The next prime is 2789406643. The reversal of 2789406634 is 4366049872.

It can be written as a sum of positive squares in 2 ways, for example, as 2279776009 + 509630625 = 47747^2 + 22575^2 .

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23109 + ... + 78184.

Almost surely, 2^2789406634 is an apocalyptic number.

2789406634 is a deficient number, since it is larger than the sum of its proper divisors (2095192634).

2789406634 is a wasteful number, since it uses less digits than its factorization.

2789406634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101590 (or 101583 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

The square root of 2789406634 is about 52814.8334656089. The cubic root of 2789406634 is about 1407.6800092410.

The spelling of 2789406634 in words is "two billion, seven hundred eighty-nine million, four hundred six thousand, six hundred thirty-four".