148661789 has 2 divisors, whose sum is σ = 148661790. Its totient is φ = 148661788.

The previous prime is 148661759. The next prime is 148661797. The reversal of 148661789 is 987166841.

148661789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147744025 + 917764 = 12155^2 + 958^2 .

It is an emirp because it is prime and its reverse (987166841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 148661789 - 2¹² = 148657693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148661729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74330894 + 74330895.

It is an arithmetic number, because the mean of its divisors is an integer number (74330895).

Almost surely, 2^148661789 is an apocalyptic number.

It is an amenable number.

148661789 is a deficient number, since it is larger than the sum of its proper divisors (1).

148661789 is an equidigital number, since it uses as much as digits as its factorization.

148661789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 50.

The square root of 148661789 is about 12192.6940829334. The cubic root of 148661789 is about 529.7444941454.

The spelling of 148661789 in words is "one hundred forty-eight million, six hundred sixty-one thousand, seven hundred eighty-nine".