1201613249 has 2 divisors, whose sum is σ = 1201613250. Its totient is φ = 1201613248.

The previous prime is 1201613239. The next prime is 1201613291. The reversal of 1201613249 is 9423161021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1172377600 + 29235649 = 34240^2 + 5407^2 .

It is an emirp because it is prime and its reverse (9423161021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201613249 - 2¹⁶ = 1201547713 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201613209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600806624 + 600806625.

It is an arithmetic number, because the mean of its divisors is an integer number (600806625).

Almost surely, 2^1201613249 is an apocalyptic number.

It is an amenable number.

1201613249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201613249 is an equidigital number, since it uses as much as digits as its factorization.

1201613249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1201613249 is about 34664.2935742242. The cubic root of 1201613249 is about 1063.1345595194.

The spelling of 1201613249 in words is "one billion, two hundred one million, six hundred thirteen thousand, two hundred forty-nine".