1698380460 has 324 divisors, whose sum is σ = 6259348368. Its totient is φ = 379173312.

The previous prime is 1698380443. The next prime is 1698380471. The reversal of 1698380460 is 640838961.

It is a tau number, because it is divible by the number of its divisors (324).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 39497199 + ... + 39497241.

Almost surely, 2^1698380460 is an apocalyptic number.

1698380460 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 1698380460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3129674184).

1698380460 is an abundant number, since it is smaller than the sum of its proper divisors (4560967908).

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

1698380460 is an frugal number, since it uses more digits than its factorization.

1698380460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1698380460 is about 41211.4117690719. The cubic root of 1698380460 is about 1193.1040727318.

The spelling of 1698380460 in words is "one billion, six hundred ninety-eight million, three hundred eighty thousand, four hundred sixty".