189402601097 has 2 divisors, whose sum is σ = 189402601098. Its totient is φ = 189402601096.

The previous prime is 189402601093. The next prime is 189402601121. The reversal of 189402601097 is 790106204981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188717261056 + 685340041 = 434416^2 + 26179^2 .

It is a cyclic number.

It is not a de Polignac number, because 189402601097 - 2² = 189402601093 is a prime.

It is not a weakly prime, because it can be changed into another prime (189402601093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94701300548 + 94701300549.

It is an arithmetic number, because the mean of its divisors is an integer number (94701300549).

Almost surely, 2^189402601097 is an apocalyptic number.

It is an amenable number.

189402601097 is a deficient number, since it is larger than the sum of its proper divisors (1).

189402601097 is an equidigital number, since it uses as much as digits as its factorization.

189402601097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 189402601097 in words is "one hundred eighty-nine billion, four hundred two million, six hundred one thousand, ninety-seven".