1643334048 has 48 divisors (see below), whose sum is σ = 4793060160. Its totient is φ = 547777728.

The previous prime is 1643334041. The next prime is 1643334067. The reversal of 1643334048 is 8404333461.

It is a happy number.

1643334048 is a `hidden beast` number, since 1 + 643 + 3 + 3 + 4 + 0 + 4 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1643334041) 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, 950140 + ... + 951867.

It is an arithmetic number, because the mean of its divisors is an integer number (99855420).

Almost surely, 2^1643334048 is an apocalyptic number.

1643334048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1643334048 is an abundant number, since it is smaller than the sum of its proper divisors (3149726112).

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

1643334048 is a wasteful number, since it uses less digits than its factorization.

1643334048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902026 (or 1902012 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 1643334048 is about 40538.0567861855. The cubic root of 1643334048 is about 1180.0723042930.

The spelling of 1643334048 in words is "one billion, six hundred forty-three million, three hundred thirty-four thousand, forty-eight".