148605869689 has 2 divisors, whose sum is σ = 148605869690. Its totient is φ = 148605869688.

The previous prime is 148605869663. The next prime is 148605869719. The reversal of 148605869689 is 986968506841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130725633600 + 17880236089 = 361560^2 + 133717^2 .

It is a cyclic number.

It is not a de Polignac number, because 148605869689 - 2²⁵ = 148572315257 is a prime.

It is not a weakly prime, because it can be changed into another prime (148605869639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74302934844 + 74302934845.

It is an arithmetic number, because the mean of its divisors is an integer number (74302934845).

Almost surely, 2^148605869689 is an apocalyptic number.

It is an amenable number.

148605869689 is a deficient number, since it is larger than the sum of its proper divisors (1).

148605869689 is an equidigital number, since it uses as much as digits as its factorization.

148605869689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 179159040, while the sum is 70.

The spelling of 148605869689 in words is "one hundred forty-eight billion, six hundred five million, eight hundred sixty-nine thousand, six hundred eighty-nine".