189908000053 has 2 divisors, whose sum is σ = 189908000054. Its totient is φ = 189908000052.

The previous prime is 189908000011. The next prime is 189908000077. The reversal of 189908000053 is 350000809981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167712363729 + 22195636324 = 409527^2 + 148982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189908000053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189907999973 and 189908000009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189908000453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94954000026 + 94954000027.

It is an arithmetic number, because the mean of its divisors is an integer number (94954000027).

Almost surely, 2^189908000053 is an apocalyptic number.

It is an amenable number.

189908000053 is a deficient number, since it is larger than the sum of its proper divisors (1).

189908000053 is an equidigital number, since it uses as much as digits as its factorization.

189908000053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 43.

The spelling of 189908000053 in words is "one hundred eighty-nine billion, nine hundred eight million, fifty-three", and thus it is an aban number.