18803898 has 24 divisors (see below), whose sum is σ = 40943136. Its totient is φ = 6237000.

The previous prime is 18803893. The next prime is 18803927. The reversal of 18803898 is 89830881.

It is not an unprimeable number, because it can be changed into a prime (18803893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1323 + ... + 6273.

It is an arithmetic number, because the mean of its divisors is an integer number (1705964).

Almost surely, 2^18803898 is an apocalyptic number.

18803898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18803898 is an abundant number, since it is smaller than the sum of its proper divisors (22139238).

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

18803898 is a wasteful number, since it uses less digits than its factorization.

18803898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5170 (or 5167 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 18803898 is about 4336.3461577692. The cubic root of 18803898 is about 265.9189550900.

It can be divided in two parts, 18803 and 898, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 18803898 in words is "eighteen million, eight hundred three thousand, eight hundred ninety-eight".