4731645646 has 16 divisors (see below), whose sum is σ = 8735346144. Its totient is φ = 1871859744.

The previous prime is 4731645641. The next prime is 4731645689. The reversal of 4731645646 is 6465461374.

It is a junction number, because it is equal to n+sod(n) for n = 4731645596 and 4731645605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4731645641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12998845 + ... + 12999208.

It is an arithmetic number, because the mean of its divisors is an integer number (545959134).

Almost surely, 2^4731645646 is an apocalyptic number.

4731645646 is a deficient number, since it is larger than the sum of its proper divisors (4003700498).

4731645646 is a wasteful number, since it uses less digits than its factorization.

4731645646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25998075.

The product of its digits is 1451520, while the sum is 46.

The square root of 4731645646 is about 68786.9584005573. The cubic root of 4731645646 is about 1678.8197547040.

The spelling of 4731645646 in words is "four billion, seven hundred thirty-one million, six hundred forty-five thousand, six hundred forty-six".