148349689 has 2 divisors, whose sum is σ = 148349690. Its totient is φ = 148349688.

The previous prime is 148349683. The next prime is 148349693. The reversal of 148349689 is 986943841.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88209664 + 60140025 = 9392^2 + 7755^2 .

It is a cyclic number.

It is not a de Polignac number, because 148349689 - 2³ = 148349681 is a prime.

It is not a weakly prime, because it can be changed into another prime (148349681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74174844 + 74174845.

It is an arithmetic number, because the mean of its divisors is an integer number (74174845).

Almost surely, 2^148349689 is an apocalyptic number.

It is an amenable number.

148349689 is a deficient number, since it is larger than the sum of its proper divisors (1).

148349689 is an equidigital number, since it uses as much as digits as its factorization.

148349689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 52.

The square root of 148349689 is about 12179.8887104932. Note that the first 3 decimals coincide. The cubic root of 148349689 is about 529.3735198848.

The spelling of 148349689 in words is "one hundred forty-eight million, three hundred forty-nine thousand, six hundred eighty-nine".