148474649 has 2 divisors, whose sum is σ = 148474650. Its totient is φ = 148474648.

The previous prime is 148474643. The next prime is 148474679. The reversal of 148474649 is 946474841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144769024 + 3705625 = 12032^2 + 1925^2 .

It is a cyclic number.

It is not a de Polignac number, because 148474649 - 2¹⁶ = 148409113 is a prime.

It is not a weakly prime, because it can be changed into another prime (148474643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74237324 + 74237325.

It is an arithmetic number, because the mean of its divisors is an integer number (74237325).

Almost surely, 2^148474649 is an apocalyptic number.

It is an amenable number.

148474649 is a deficient number, since it is larger than the sum of its proper divisors (1).

148474649 is an equidigital number, since it uses as much as digits as its factorization.

148474649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 47.

The square root of 148474649 is about 12185.0173984283. The cubic root of 148474649 is about 529.5221146242.

The spelling of 148474649 in words is "one hundred forty-eight million, four hundred seventy-four thousand, six hundred forty-nine".