194267620992064 has 21 divisors (see below), whose sum is σ = 385500031671877. Its totient is φ = 97133754744064.

The previous prime is 194267620992061. The next prime is 194267620992121. The reversal of 194267620992064 is 460299026762491.

The square root of 194267620992064 is 13937992.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 26795034137664 + 167472586854400 = 5176392^2 + 12941120^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194267620992061) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 110632812 + ... + 112375060.

Almost surely, 2^{194267620992064} is an apocalyptic number.

194267620992064 is the 13937992-nd square number.

It is an amenable number.

194267620992064 is a deficient number, since it is larger than the sum of its proper divisors (191232410679813).

194267620992064 is an frugal number, since it uses more digits than its factorization.

194267620992064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3484510 (or 1742251 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 67.

The spelling of 194267620992064 in words is "one hundred ninety-four trillion, two hundred sixty-seven billion, six hundred twenty million, nine hundred ninety-two thousand, sixty-four".