4661642438 has 16 divisors (see below), whose sum is σ = 7680510720. Its totient is φ = 2112139656.

The previous prime is 4661642423. The next prime is 4661642443. The reversal of 4661642438 is 8342461664.

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, 2665970 + ... + 2667717.

It is an arithmetic number, because the mean of its divisors is an integer number (480031920).

Almost surely, 2^4661642438 is an apocalyptic number.

4661642438 is a deficient number, since it is larger than the sum of its proper divisors (3018868282).

4661642438 is a wasteful number, since it uses less digits than its factorization.

4661642438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333731.

The product of its digits is 663552, while the sum is 44.

The square root of 4661642438 is about 68276.2216148492. The cubic root of 4661642438 is about 1670.4993830858.

The spelling of 4661642438 in words is "four billion, six hundred sixty-one million, six hundred forty-two thousand, four hundred thirty-eight".