1698668198485 has 16 divisors (see below), whose sum is σ = 2144432102400. Its totient is φ = 1289836184896.

The previous prime is 1698668198473. The next prime is 1698668198489. The reversal of 1698668198485 is 5848918668961.

It is not a de Polignac number, because 1698668198485 - 2²¹ = 1698666101333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1698668198489) 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, 99270709 + ... + 99287818.

It is an arithmetic number, because the mean of its divisors is an integer number (134027006400).

Almost surely, 2^{1698668198485} is an apocalyptic number.

It is an amenable number.

1698668198485 is a deficient number, since it is larger than the sum of its proper divisors (445763903915).

1698668198485 is a wasteful number, since it uses less digits than its factorization.

1698668198485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198558620.

The product of its digits is 1433272320, while the sum is 79.

The spelling of 1698668198485 in words is "one trillion, six hundred ninety-eight billion, six hundred sixty-eight million, one hundred ninety-eight thousand, four hundred eighty-five".