4465138648 has 16 divisors (see below), whose sum is σ = 8382977280. Its totient is φ = 2229678048.

The previous prime is 4465138637. The next prime is 4465138663. The reversal of 4465138648 is 8468315644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354840 + ... + 367207.

It is an arithmetic number, because the mean of its divisors is an integer number (523936080).

Almost surely, 2^4465138648 is an apocalyptic number.

It is an amenable number.

4465138648 is a deficient number, since it is larger than the sum of its proper divisors (3917838632).

4465138648 is a wasteful number, since it uses less digits than its factorization.

4465138648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722826 (or 722822 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 49.

The square root of 4465138648 is about 66821.6929447317. The cubic root of 4465138648 is about 1646.6892472513.

The spelling of 4465138648 in words is "four billion, four hundred sixty-five million, one hundred thirty-eight thousand, six hundred forty-eight".