194964541 has 2 divisors, whose sum is σ = 194964542. Its totient is φ = 194964540.

The previous prime is 194964533. The next prime is 194964571. The reversal of 194964541 is 145469491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147987225 + 46977316 = 12165^2 + 6854^2 .

It is a cyclic number.

It is not a de Polignac number, because 194964541 - 2³ = 194964533 is a prime.

It is a super-2 number, since 2×194964541² = 76022344494681362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194964521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97482270 + 97482271.

It is an arithmetic number, because the mean of its divisors is an integer number (97482271).

Almost surely, 2^194964541 is an apocalyptic number.

It is an amenable number.

194964541 is a deficient number, since it is larger than the sum of its proper divisors (1).

194964541 is an equidigital number, since it uses as much as digits as its factorization.

194964541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 194964541 is about 13962.9703501798. The cubic root of 194964541 is about 579.8538484307.

The spelling of 194964541 in words is "one hundred ninety-four million, nine hundred sixty-four thousand, five hundred forty-one".