193438541 has 2 divisors, whose sum is σ = 193438542. Its totient is φ = 193438540.

The previous prime is 193438537. The next prime is 193438549. The reversal of 193438541 is 145834391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105472900 + 87965641 = 10270^2 + 9379^2 .

It is a cyclic number.

It is not a de Polignac number, because 193438541 - 2² = 193438537 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 193438495 and 193438504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193438549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96719270 + 96719271.

It is an arithmetic number, because the mean of its divisors is an integer number (96719271).

Almost surely, 2^193438541 is an apocalyptic number.

It is an amenable number.

193438541 is a deficient number, since it is larger than the sum of its proper divisors (1).

193438541 is an equidigital number, since it uses as much as digits as its factorization.

193438541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 193438541 is about 13908.2184696675. The cubic root of 193438541 is about 578.3370329962.

The spelling of 193438541 in words is "one hundred ninety-three million, four hundred thirty-eight thousand, five hundred forty-one".