4691638 has 8 divisors (see below), whose sum is σ = 8042832. Its totient is φ = 2010696.

The previous prime is 4691627. The next prime is 4691699. The reversal of 4691638 is 8361964.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4691638² = 44022934246088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4691597 and 4691606.

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 3 ways as a sum of consecutive naturals, for example, 167545 + ... + 167572.

It is an arithmetic number, because the mean of its divisors is an integer number (1005354).

Almost surely, 2^4691638 is an apocalyptic number.

4691638 is a deficient number, since it is larger than the sum of its proper divisors (3351194).

4691638 is a wasteful number, since it uses less digits than its factorization.

4691638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335126.

The product of its digits is 31104, while the sum is 37.

The square root of 4691638 is about 2166.0189288185. The cubic root of 4691638 is about 167.4074694996.

It can be divided in two parts, 4691 and 638, that added together give a square (5329 = 73²).

The spelling of 4691638 in words is "four million, six hundred ninety-one thousand, six hundred thirty-eight".