18969000 has 64 divisors (see below), whose sum is σ = 59192640. Its totient is φ = 5057600.

The previous prime is 18968969. The next prime is 18969001. The reversal of 18969000 is 96981.

It is a happy number.

It is a super-2 number, since 2×18969000² = 719645922000000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18969001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162 + ... + 6161.

It is an arithmetic number, because the mean of its divisors is an integer number (924885).

Almost surely, 2^18969000 is an apocalyptic number.

18969000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18969000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29596320).

18969000 is an abundant number, since it is smaller than the sum of its proper divisors (40223640).

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

18969000 is a wasteful number, since it uses less digits than its factorization.

18969000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6347 (or 6333 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 18969000 is about 4355.3415480304. The cubic root of 18969000 is about 266.6949622753.

The spelling of 18969000 in words is "eighteen million, nine hundred sixty-nine thousand".