810009002 has 16 divisors (see below), whose sum is σ = 1330636032. Its totient is φ = 366750720.

The previous prime is 810008999. The next prime is 810009023. The reversal of 810009002 is 200900018.

It is a super-2 number, since 2×810009002² = 1312229166642072008, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65978 + ... + 77285.

It is an arithmetic number, because the mean of its divisors is an integer number (83164752).

Almost surely, 2^810009002 is an apocalyptic number.

810009002 is a deficient number, since it is larger than the sum of its proper divisors (520627030).

810009002 is a wasteful number, since it uses less digits than its factorization.

810009002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143533.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 810009002 is about 28460.6570900954. The cubic root of 810009002 is about 932.1732050211.

The spelling of 810009002 in words is "eight hundred ten million, nine thousand, two".