4651816 has 16 divisors (see below), whose sum is σ = 9393300. Its totient is φ = 2146944.

The previous prime is 4651813. The next prime is 4651831. The reversal of 4651816 is 6181564.

It can be written as a sum of positive squares in 2 ways, for example, as 4639716 + 12100 = 2154^2 + 110^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4651811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22261 + ... + 22468.

Almost surely, 2^4651816 is an apocalyptic number.

It is an amenable number.

4651816 is an abundant number, since it is smaller than the sum of its proper divisors (4741484).

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

4651816 is a wasteful number, since it uses less digits than its factorization.

4651816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44748 (or 44744 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 4651816 is about 2156.8068990988. The cubic root of 4651816 is about 166.9324789487.

The spelling of 4651816 in words is "four million, six hundred fifty-one thousand, eight hundred sixteen".