18985299030 has 48 divisors (see below), whose sum is σ = 50695888464. Its totient is φ = 4925914560.

The previous prime is 18985299019. The next prime is 18985299037. The reversal of 18985299030 is 3099258981.

18985299030 is a `hidden beast` number, since 1 + 89 + 8 + 529 + 9 + 0 + 30 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18985299037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2847316 + ... + 2853975.

It is an arithmetic number, because the mean of its divisors is an integer number (1056164343).

Almost surely, 2^18985299030 is an apocalyptic number.

18985299030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18985299030 is an abundant number, since it is smaller than the sum of its proper divisors (31710589434).

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

18985299030 is a wasteful number, since it uses less digits than its factorization.

18985299030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5701341 (or 5701338 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

It can be divided in two parts, 189852 and 99030, that added together give a palindrome (288882).

The spelling of 18985299030 in words is "eighteen billion, nine hundred eighty-five million, two hundred ninety-nine thousand, thirty".