1662189219318 has 16 divisors (see below), whose sum is σ = 3499345725120. Its totient is φ = 524901858696.

The previous prime is 1662189219287. The next prime is 1662189219329. The reversal of 1662189219318 is 8139129812661.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7290303480 + ... + 7290303707.

It is an arithmetic number, because the mean of its divisors is an integer number (218709107820).

Almost surely, 2^{1662189219318} is an apocalyptic number.

1662189219318 is an abundant number, since it is smaller than the sum of its proper divisors (1837156505802).

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

1662189219318 is a wasteful number, since it uses less digits than its factorization.

1662189219318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14580607211.

The product of its digits is 2239488, while the sum is 57.

The spelling of 1662189219318 in words is "one trillion, six hundred sixty-two billion, one hundred eighty-nine million, two hundred nineteen thousand, three hundred eighteen".