193465561 has 2 divisors, whose sum is σ = 193465562. Its totient is φ = 193465560.

The previous prime is 193465541. The next prime is 193465603. The reversal of 193465561 is 165564391.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173080336 + 20385225 = 13156^2 + 4515^2 .

It is an emirp because it is prime and its reverse (165564391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 193465561 - 2²¹ = 191368409 is a prime.

It is not a weakly prime, because it can be changed into another prime (193465541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96732780 + 96732781.

It is an arithmetic number, because the mean of its divisors is an integer number (96732781).

Almost surely, 2^193465561 is an apocalyptic number.

It is an amenable number.

193465561 is a deficient number, since it is larger than the sum of its proper divisors (1).

193465561 is an equidigital number, since it uses as much as digits as its factorization.

193465561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 40.

The square root of 193465561 is about 13909.1898038671. The cubic root of 193465561 is about 578.3639596176.

The spelling of 193465561 in words is "one hundred ninety-three million, four hundred sixty-five thousand, five hundred sixty-one".