1201450409 has 2 divisors, whose sum is σ = 1201450410. Its totient is φ = 1201450408.

The previous prime is 1201450399. The next prime is 1201450457. The reversal of 1201450409 is 9040541021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1186458025 + 14992384 = 34445^2 + 3872^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201450409 - 2⁸ = 1201450153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201450489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600725204 + 600725205.

It is an arithmetic number, because the mean of its divisors is an integer number (600725205).

Almost surely, 2^1201450409 is an apocalyptic number.

It is an amenable number.

1201450409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201450409 is an equidigital number, since it uses as much as digits as its factorization.

1201450409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1201450409 is about 34661.9446800089. The cubic root of 1201450409 is about 1063.0865327929.

The spelling of 1201450409 in words is "one billion, two hundred one million, four hundred fifty thousand, four hundred nine".