151388449 has 2 divisors, whose sum is σ = 151388450. Its totient is φ = 151388448.

The previous prime is 151388437. The next prime is 151388521. The reversal of 151388449 is 944883151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133240849 + 18147600 = 11543^2 + 4260^2 .

It is a cyclic number.

It is not a de Polignac number, because 151388449 - 2¹⁷ = 151257377 is a prime.

It is not a weakly prime, because it can be changed into another prime (151388249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75694224 + 75694225.

It is an arithmetic number, because the mean of its divisors is an integer number (75694225).

Almost surely, 2^151388449 is an apocalyptic number.

It is an amenable number.

151388449 is a deficient number, since it is larger than the sum of its proper divisors (1).

151388449 is an equidigital number, since it uses as much as digits as its factorization.

151388449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 43.

The square root of 151388449 is about 12304.0013410272. The cubic root of 151388449 is about 532.9636380217.

The spelling of 151388449 in words is "one hundred fifty-one million, three hundred eighty-eight thousand, four hundred forty-nine".