3504901638 has 16 divisors (see below), whose sum is σ = 8011203840. Its totient is φ = 1001400456.

The previous prime is 3504901601. The next prime is 3504901657. The reversal of 3504901638 is 8361094053.

It is a junction number, because it is equal to n+sod(n) for n = 3504901596 and 3504901605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41724978 + ... + 41725061.

It is an arithmetic number, because the mean of its divisors is an integer number (500700240).

Almost surely, 2^3504901638 is an apocalyptic number.

3504901638 is an abundant number, since it is smaller than the sum of its proper divisors (4506302202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3504901638 is a wasteful number, since it uses less digits than its factorization.

3504901638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83450051.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 3504901638 is about 59202.2097391643. The cubic root of 3504901638 is about 1519.0029296038.

The spelling of 3504901638 in words is "three billion, five hundred four million, nine hundred one thousand, six hundred thirty-eight".