4291638 has 16 divisors (see below), whose sum is σ = 9243696. Its totient is φ = 1320480.

The previous prime is 4291631. The next prime is 4291649. The reversal of 4291638 is 8361924.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4291599 and 4291608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4291631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27433 + ... + 27588.

It is an arithmetic number, because the mean of its divisors is an integer number (577731).

Almost surely, 2^4291638 is an apocalyptic number.

4291638 is an abundant number, since it is smaller than the sum of its proper divisors (4952058).

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

4291638 is a wasteful number, since it uses less digits than its factorization.

4291638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55039.

The product of its digits is 10368, while the sum is 33.

The square root of 4291638 is about 2071.6268969098. The cubic root of 4291638 is about 162.5078560305.

The spelling of 4291638 in words is "four million, two hundred ninety-one thousand, six hundred thirty-eight".