1200650389 has 2 divisors, whose sum is σ = 1200650390. Its totient is φ = 1200650388.

The previous prime is 1200650329. The next prime is 1200650401. The reversal of 1200650389 is 9830560021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1200622500 + 27889 = 34650^2 + 167^2 .

It is an emirp because it is prime and its reverse (9830560021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200650389 - 2¹³ = 1200642197 is a prime.

It is a super-2 number, since 2×1200650389² = 2883122713211702642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200650309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600325194 + 600325195.

It is an arithmetic number, because the mean of its divisors is an integer number (600325195).

Almost surely, 2^1200650389 is an apocalyptic number.

It is an amenable number.

1200650389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200650389 is an equidigital number, since it uses as much as digits as its factorization.

1200650389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1200650389 is about 34650.4024363354. The cubic root of 1200650389 is about 1062.8505182431.

The spelling of 1200650389 in words is "one billion, two hundred million, six hundred fifty thousand, three hundred eighty-nine".