18689034 has 48 divisors (see below), whose sum is σ = 46274112. Its totient is φ = 4927104.

The previous prime is 18689023. The next prime is 18689051. The reversal of 18689034 is 43098681.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18688983 and 18689001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5782 + ... + 8414.

It is an arithmetic number, because the mean of its divisors is an integer number (964044).

Almost surely, 2^18689034 is an apocalyptic number.

18689034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18689034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23137056).

18689034 is an abundant number, since it is smaller than the sum of its proper divisors (27585078).

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

18689034 is a wasteful number, since it uses less digits than its factorization.

18689034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671 (or 2658 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 18689034 is about 4323.0815398278. The cubic root of 18689034 is about 265.3763916861.

The spelling of 18689034 in words is "eighteen million, six hundred eighty-nine thousand, thirty-four".