802143648 has 60 divisors (see below), whose sum is σ = 2359089810. Its totient is φ = 267380352.

The previous prime is 802143647. The next prime is 802143659. The reversal of 802143648 is 846341208.

802143648 is a `hidden beast` number, since 8 + 0 + 2 + 1 + 4 + 3 + 648 = 666.

It can be written as a sum of positive squares in only one way, i.e., 455737104 + 346406544 = 21348^2 + 18612^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 (802143647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 152143 + ... + 157326.

Almost surely, 2^802143648 is an apocalyptic number.

It is an amenable number.

802143648 is an abundant number, since it is smaller than the sum of its proper divisors (1556946162).

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

802143648 is a wasteful number, since it uses less digits than its factorization.

802143648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309491 (or 309474 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 802143648 is about 28322.1405970665. The cubic root of 802143648 is about 929.1461882791.

The spelling of 802143648 in words is "eight hundred two million, one hundred forty-three thousand, six hundred forty-eight".