18909289002 has 16 divisors (see below), whose sum is σ = 37825017120. Its totient is φ = 6302023152.

The previous prime is 18909288947. The next prime is 18909289013. The reversal of 18909289002 is 20098290981.

It is a super-2 number, since 2×18909289002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229693 + ... + 300960.

It is an arithmetic number, because the mean of its divisors is an integer number (2364063570).

Almost surely, 2^18909289002 is an apocalyptic number.

18909289002 is an abundant number, since it is smaller than the sum of its proper divisors (18915728118).

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

18909289002 is a wasteful number, since it uses less digits than its factorization.

18909289002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536597.

The product of its (nonzero) digits is 186624, while the sum is 48.

The spelling of 18909289002 in words is "eighteen billion, nine hundred nine million, two hundred eighty-nine thousand, two".