1685722098 has 8 divisors (see below), whose sum is σ = 3371444208. Its totient is φ = 561907364.

The previous prime is 1685722097. The next prime is 1685722111. The reversal of 1685722098 is 8902275861.

1685722098 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

1685722098 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1685722097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140476836 + ... + 140476847.

It is an arithmetic number, because the mean of its divisors is an integer number (421430526).

Almost surely, 2^1685722098 is an apocalyptic number.

1685722098 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1685722098 is a wasteful number, since it uses less digits than its factorization.

1685722098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280953688.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 1685722098 is about 41057.5461760685. The cubic root of 1685722098 is about 1190.1325319049.

The spelling of 1685722098 in words is "one billion, six hundred eighty-five million, seven hundred twenty-two thousand, ninety-eight".