194090934145 has 8 divisors (see below), whose sum is σ = 232997999400. Its totient is φ = 155213495040.

The previous prime is 194090934083. The next prime is 194090934197. The reversal of 194090934145 is 541439090491.

It can be written as a sum of positive squares in 4 ways, for example, as 15533135424 + 178557798721 = 124632^2 + 422561^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 194090934145 - 2³¹ = 191943450497 is a prime.

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, 7392120 + ... + 7418329.

It is an arithmetic number, because the mean of its divisors is an integer number (29124749925).

Almost surely, 2^194090934145 is an apocalyptic number.

It is an amenable number.

194090934145 is a deficient number, since it is larger than the sum of its proper divisors (38907065255).

194090934145 is a wasteful number, since it uses less digits than its factorization.

194090934145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14813075.

The product of its (nonzero) digits is 699840, while the sum is 49.

The spelling of 194090934145 in words is "one hundred ninety-four billion, ninety million, nine hundred thirty-four thousand, one hundred forty-five".