802149218 has 8 divisors (see below), whose sum is σ = 1295779548. Its totient is φ = 370222704.

The previous prime is 802149217. The next prime is 802149221. The reversal of 802149218 is 812941208.

It can be written as a sum of positive squares in 2 ways, for example, as 693426889 + 108722329 = 26333^2 + 10427^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (802149217) 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 3 ways as a sum of consecutive naturals, for example, 15425921 + ... + 15425972.

Almost surely, 2^802149218 is an apocalyptic number.

802149218 is a deficient number, since it is larger than the sum of its proper divisors (493630330).

802149218 is a wasteful number, since it uses less digits than its factorization.

802149218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30851908.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 802149218 is about 28322.2389298586. The cubic root of 802149218 is about 929.1483389049.

The spelling of 802149218 in words is "eight hundred two million, one hundred forty-nine thousand, two hundred eighteen".