1284502381 has 2 divisors, whose sum is σ = 1284502382. Its totient is φ = 1284502380.

The previous prime is 1284502363. The next prime is 1284502399. The reversal of 1284502381 is 1832054821.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1284502363) and next prime (1284502399).

It can be written as a sum of positive squares in only one way, i.e., 751308100 + 533194281 = 27410^2 + 23091^2 .

It is a cyclic number.

It is not a de Polignac number, because 1284502381 - 2⁷ = 1284502253 is a prime.

It is a super-2 number, since 2×1284502381² = 3299892733589338322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1284502361) 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, 642251190 + 642251191.

It is an arithmetic number, because the mean of its divisors is an integer number (642251191).

Almost surely, 2^1284502381 is an apocalyptic number.

It is an amenable number.

1284502381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284502381 is an equidigital number, since it uses as much as digits as its factorization.

1284502381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 1284502381 is about 35839.9550920478. The cubic root of 1284502381 is about 1087.0386133855.

The spelling of 1284502381 in words is "one billion, two hundred eighty-four million, five hundred two thousand, three hundred eighty-one".