18881002 has 16 divisors (see below), whose sum is σ = 32852160. Its totient is φ = 7970688.

The previous prime is 18880993. The next prime is 18881011. The reversal of 18881002 is 20018881.

It is an interprime number because it is at equal distance from previous prime (18880993) and next prime (18881011).

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, 9127 + ... + 11002.

It is an arithmetic number, because the mean of its divisors is an integer number (2053260).

Almost surely, 2^18881002 is an apocalyptic number.

18881002 is a deficient number, since it is larger than the sum of its proper divisors (13971158).

18881002 is a wasteful number, since it uses less digits than its factorization.

18881002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20205.

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 18881002 is about 4345.2274969212. The cubic root of 18881002 is about 266.2819198067.

Adding to 18881002 its reverse (20018881), we get a palindrome (38899883).

The spelling of 18881002 in words is "eighteen million, eight hundred eighty-one thousand, two".