189078236653 has 2 divisors, whose sum is σ = 189078236654. Its totient is φ = 189078236652.

The previous prime is 189078236531. The next prime is 189078236693. The reversal of 189078236653 is 356632870981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165308922724 + 23769313929 = 406582^2 + 154173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189078236653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189078236693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94539118326 + 94539118327.

It is an arithmetic number, because the mean of its divisors is an integer number (94539118327).

Almost surely, 2^189078236653 is an apocalyptic number.

It is an amenable number.

189078236653 is a deficient number, since it is larger than the sum of its proper divisors (1).

189078236653 is an equidigital number, since it uses as much as digits as its factorization.

189078236653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 189078236653 in words is "one hundred eighty-nine billion, seventy-eight million, two hundred thirty-six thousand, six hundred fifty-three".