1664383505198 has 16 divisors (see below), whose sum is σ = 2694953803680. Its totient is φ = 768560898336.

The previous prime is 1664383505179. The next prime is 1664383505203. The reversal of 1664383505198 is 8915053834661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623830565 + ... + 623833232.

It is an arithmetic number, because the mean of its divisors is an integer number (168434612730).

Almost surely, 2^{1664383505198} is an apocalyptic number.

1664383505198 is a deficient number, since it is larger than the sum of its proper divisors (1030570298482).

1664383505198 is a wasteful number, since it uses less digits than its factorization.

1664383505198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247663851.

The product of its (nonzero) digits is 18662400, while the sum is 59.

The spelling of 1664383505198 in words is "one trillion, six hundred sixty-four billion, three hundred eighty-three million, five hundred five thousand, one hundred ninety-eight".