1285286137 has 2 divisors, whose sum is σ = 1285286138. Its totient is φ = 1285286136.

The previous prime is 1285286117. The next prime is 1285286143. The reversal of 1285286137 is 7316825821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1014486201 + 270799936 = 31851^2 + 16456^2 .

It is a cyclic number.

It is not a de Polignac number, because 1285286137 - 2¹⁵ = 1285253369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1285286093 and 1285286102.

It is not a weakly prime, because it can be changed into another prime (1285286117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642643068 + 642643069.

It is an arithmetic number, because the mean of its divisors is an integer number (642643069).

Almost surely, 2^1285286137 is an apocalyptic number.

It is an amenable number.

1285286137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1285286137 is an equidigital number, since it uses as much as digits as its factorization.

1285286137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 1285286137 is about 35850.8875343415. The cubic root of 1285286137 is about 1087.2596587298.

It can be divided in two parts, 12852 and 86137, that added together give a palindrome (98989).

The spelling of 1285286137 in words is "one billion, two hundred eighty-five million, two hundred eighty-six thousand, one hundred thirty-seven".