193290869 has 2 divisors, whose sum is σ = 193290870. Its totient is φ = 193290868.

The previous prime is 193290821. The next prime is 193290941. The reversal of 193290869 is 968092391.

193290869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188732644 + 4558225 = 13738^2 + 2135^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-193290869 is a prime.

It is a super-2 number, since 2×193290869² = 74722720077550322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (193290809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96645434 + 96645435.

It is an arithmetic number, because the mean of its divisors is an integer number (96645435).

Almost surely, 2^193290869 is an apocalyptic number.

It is an amenable number.

193290869 is a deficient number, since it is larger than the sum of its proper divisors (1).

193290869 is an equidigital number, since it uses as much as digits as its factorization.

193290869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 193290869 is about 13902.9086525087. The cubic root of 193290869 is about 578.1898270192.

The spelling of 193290869 in words is "one hundred ninety-three million, two hundred ninety thousand, eight hundred sixty-nine".