194522051378 has 6 divisors (see below), whose sum is σ = 291784012671. Its totient is φ = 97260713822.

The previous prime is 194522051369. The next prime is 194522051389. The reversal of 194522051378 is 873150225491.

It can be written as a sum of positive squares in only one way, i.e., 97261025689 + 97261025689 = 311867^2 + 311867^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=311867.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 467801 + ... + 779667.

Almost surely, 2^194522051378 is an apocalyptic number.

194522051378 is a deficient number, since it is larger than the sum of its proper divisors (97261961293).

194522051378 is an frugal number, since it uses more digits than its factorization.

194522051378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623736 (or 311869 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 194522051378 in words is "one hundred ninety-four billion, five hundred twenty-two million, fifty-one thousand, three hundred seventy-eight".