801921266 has 16 divisors (see below), whose sum is σ = 1270309824. Its totient is φ = 378904944.

The previous prime is 801921257. The next prime is 801921269. The reversal of 801921266 is 662129108.

It is not an unprimeable number, because it can be changed into a prime (801921269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101201 + ... + 108836.

It is an arithmetic number, because the mean of its divisors is an integer number (79394364).

Almost surely, 2^801921266 is an apocalyptic number.

801921266 is a deficient number, since it is larger than the sum of its proper divisors (468388558).

801921266 is a wasteful number, since it uses less digits than its factorization.

801921266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210145.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 801921266 is about 28318.2143857977. The cubic root of 801921266 is about 929.0603165089.

The spelling of 801921266 in words is "eight hundred one million, nine hundred twenty-one thousand, two hundred sixty-six".