193068649 has 2 divisors, whose sum is σ = 193068650. Its totient is φ = 193068648.

The previous prime is 193068611. The next prime is 193068661. The reversal of 193068649 is 946860391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191628649 + 1440000 = 13843^2 + 1200^2 .

It is an emirp because it is prime and its reverse (946860391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 193068649 - 2⁷ = 193068521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 193068599 and 193068608.

It is not a weakly prime, because it can be changed into another prime (193068349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96534324 + 96534325.

It is an arithmetic number, because the mean of its divisors is an integer number (96534325).

Almost surely, 2^193068649 is an apocalyptic number.

It is an amenable number.

193068649 is a deficient number, since it is larger than the sum of its proper divisors (1).

193068649 is an equidigital number, since it uses as much as digits as its factorization.

193068649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 193068649 is about 13894.9145013562. The cubic root of 193068649 is about 577.9681669310.

The spelling of 193068649 in words is "one hundred ninety-three million, sixty-eight thousand, six hundred forty-nine".