2601638834 has 4 divisors (see below), whose sum is σ = 3902458254. Its totient is φ = 1300819416.

The previous prime is 2601638827. The next prime is 2601638857. The reversal of 2601638834 is 4388361062.

It is a happy number.

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., 2452725625 + 148913209 = 49525^2 + 12203^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2601638791 and 2601638800.

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 as a sum of consecutive naturals, namely, 650409707 + ... + 650409710.

Almost surely, 2^2601638834 is an apocalyptic number.

2601638834 is a deficient number, since it is larger than the sum of its proper divisors (1300819420).

2601638834 is a wasteful number, since it uses less digits than its factorization.

2601638834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300819419.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 2601638834 is about 51006.2626939085. The cubic root of 2601638834 is about 1375.3577178818.

Adding to 2601638834 its reverse (4388361062), we get a palindrome (6989999896).

The spelling of 2601638834 in words is "two billion, six hundred one million, six hundred thirty-eight thousand, eight hundred thirty-four".