1698015609412 has 6 divisors (see below), whose sum is σ = 2971527316478. Its totient is φ = 849007804704.

The previous prime is 1698015609401. The next prime is 1698015609491. The reversal of 1698015609412 is 2149065108961.

It can be written as a sum of positive squares in only one way, i.e., 1441690095616 + 256325513796 = 1200704^2 + 506286^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1698015609412.

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 as a sum of consecutive naturals, namely, 212251951173 + ... + 212251951180.

Almost surely, 2^{1698015609412} is an apocalyptic number.

It is an amenable number.

1698015609412 is a deficient number, since it is larger than the sum of its proper divisors (1273511707066).

1698015609412 is a wasteful number, since it uses less digits than its factorization.

1698015609412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424503902357 (or 424503902355 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 1698015609412 in words is "one trillion, six hundred ninety-eight billion, fifteen million, six hundred nine thousand, four hundred twelve".