3491607638 has 16 divisors (see below), whose sum is σ = 5380943184. Its totient is φ = 1697994720.

The previous prime is 3491607589. The next prime is 3491607677. The reversal of 3491607638 is 8367061943.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3491607592 and 3491607601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242456 + ... + 256452.

It is an arithmetic number, because the mean of its divisors is an integer number (336308949).

Almost surely, 2^3491607638 is an apocalyptic number.

3491607638 is a deficient number, since it is larger than the sum of its proper divisors (1889335546).

3491607638 is a wasteful number, since it uses less digits than its factorization.

3491607638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17407.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 3491607638 is about 59089.8268570826. The cubic root of 3491607638 is about 1517.0799835636.

The spelling of 3491607638 in words is "three billion, four hundred ninety-one million, six hundred seven thousand, six hundred thirty-eight".