148451969 has 2 divisors, whose sum is σ = 148451970. Its totient is φ = 148451968.

The previous prime is 148451923. The next prime is 148451977. The reversal of 148451969 is 969154841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125171344 + 23280625 = 11188^2 + 4825^2 .

It is a cyclic number.

It is not a de Polignac number, because 148451969 - 2²⁰ = 147403393 is a prime.

It is a super-3 number, since 3×148451969³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (148451909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74225984 + 74225985.

It is an arithmetic number, because the mean of its divisors is an integer number (74225985).

Almost surely, 2^148451969 is an apocalyptic number.

It is an amenable number.

148451969 is a deficient number, since it is larger than the sum of its proper divisors (1).

148451969 is an equidigital number, since it uses as much as digits as its factorization.

148451969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 47.

The square root of 148451969 is about 12184.0867117729. The cubic root of 148451969 is about 529.4951511589.

The spelling of 148451969 in words is "one hundred forty-eight million, four hundred fifty-one thousand, nine hundred sixty-nine".