1202385389 has 2 divisors, whose sum is σ = 1202385390. Its totient is φ = 1202385388.

The previous prime is 1202385347. The next prime is 1202385403. The reversal of 1202385389 is 9835832021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 715830025 + 486555364 = 26755^2 + 22058^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202385389 - 2⁸ = 1202385133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202385589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601192694 + 601192695.

It is an arithmetic number, because the mean of its divisors is an integer number (601192695).

Almost surely, 2^1202385389 is an apocalyptic number.

It is an amenable number.

1202385389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202385389 is an equidigital number, since it uses as much as digits as its factorization.

1202385389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1202385389 is about 34675.4291826359. The cubic root of 1202385389 is about 1063.3622292658.

The spelling of 1202385389 in words is "one billion, two hundred two million, three hundred eighty-five thousand, three hundred eighty-nine".