1228187383 has 2 divisors, whose sum is σ = 1228187384. Its totient is φ = 1228187382.

The previous prime is 1228187369. The next prime is 1228187399. The reversal of 1228187383 is 3837818221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1228187383 - 2²¹ = 1226090231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228187353) 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, 614093691 + 614093692.

It is an arithmetic number, because the mean of its divisors is an integer number (614093692).

Almost surely, 2^1228187383 is an apocalyptic number.

1228187383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228187383 is an equidigital number, since it uses as much as digits as its factorization.

1228187383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 43.

The square root of 1228187383 is about 35045.5044620562. The cubic root of 1228187383 is about 1070.9146931449.

The spelling of 1228187383 in words is "one billion, two hundred twenty-eight million, one hundred eighty-seven thousand, three hundred eighty-three".