1284104893 has 2 divisors, whose sum is σ = 1284104894. Its totient is φ = 1284104892.

The previous prime is 1284104827. The next prime is 1284104929. The reversal of 1284104893 is 3984014821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1197298404 + 86806489 = 34602^2 + 9317^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1284104893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1284104803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642052446 + 642052447.

It is an arithmetic number, because the mean of its divisors is an integer number (642052447).

Almost surely, 2^1284104893 is an apocalyptic number.

It is an amenable number.

1284104893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284104893 is an equidigital number, since it uses as much as digits as its factorization.

1284104893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 1284104893 is about 35834.4093435346. The cubic root of 1284104893 is about 1086.9264741405.

The spelling of 1284104893 in words is "one billion, two hundred eighty-four million, one hundred four thousand, eight hundred ninety-three".