1202891141 has 2 divisors, whose sum is σ = 1202891142. Its totient is φ = 1202891140.

The previous prime is 1202891119. The next prime is 1202891149. The reversal of 1202891141 is 1411982021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1177176100 + 25715041 = 34310^2 + 5071^2 .

It is an emirp because it is prime and its reverse (1411982021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202891141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202891149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601445570 + 601445571.

It is an arithmetic number, because the mean of its divisors is an integer number (601445571).

Almost surely, 2^1202891141 is an apocalyptic number.

It is an amenable number.

1202891141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202891141 is an equidigital number, since it uses as much as digits as its factorization.

1202891141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1202891141 is about 34682.7210726033. The cubic root of 1202891141 is about 1063.5113002135.

The spelling of 1202891141 in words is "one billion, two hundred two million, eight hundred ninety-one thousand, one hundred forty-one".