1673668390389 has 16 divisors (see below), whose sum is σ = 2246610537600. Its totient is φ = 1108253090880.

The previous prime is 1673668390369. The next prime is 1673668390439. The reversal of 1673668390389 is 9830938663761.

It is not a de Polignac number, because 1673668390389 - 2¹⁷ = 1673668259317 is a prime.

It is a super-2 number, since 2×1673668390389² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1673668390369) 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, 21205179 + ... + 21283959.

It is an arithmetic number, because the mean of its divisors is an integer number (140413158600).

Almost surely, 2^{1673668390389} is an apocalyptic number.

It is an amenable number.

1673668390389 is a deficient number, since it is larger than the sum of its proper divisors (572942147211).

1673668390389 is a wasteful number, since it uses less digits than its factorization.

1673668390389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126460.

The product of its (nonzero) digits is 211631616, while the sum is 69.

The spelling of 1673668390389 in words is "one trillion, six hundred seventy-three billion, six hundred sixty-eight million, three hundred ninety thousand, three hundred eighty-nine".