1698138000 has 640 divisors, whose sum is σ = 6824563200. Its totient is φ = 400896000.

The previous prime is 1698137929. The next prime is 1698138011. The reversal of 1698138000 is 8318961.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 28781971 + ... + 28782029.

It is an arithmetic number, because the mean of its divisors is an integer number (10663380).

Almost surely, 2^1698138000 is an apocalyptic number.

1698138000 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 1698138000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3412281600).

1698138000 is an abundant number, since it is smaller than the sum of its proper divisors (5126425200).

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

1698138000 is a wasteful number, since it uses less digits than its factorization.

1698138000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 1698138000 is about 41208.4700031438. The cubic root of 1698138000 is about 1193.0472943700.

The spelling of 1698138000 in words is "one billion, six hundred ninety-eight million, one hundred thirty-eight thousand".