1283457139 has 2 divisors, whose sum is σ = 1283457140. Its totient is φ = 1283457138.

The previous prime is 1283457127. The next prime is 1283457179. The reversal of 1283457139 is 9317543821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1283457139 - 2⁵ = 1283457107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1283457095 and 1283457104.

It is not a weakly prime, because it can be changed into another prime (1283457179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641728569 + 641728570.

It is an arithmetic number, because the mean of its divisors is an integer number (641728570).

Almost surely, 2^1283457139 is an apocalyptic number.

1283457139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283457139 is an equidigital number, since it uses as much as digits as its factorization.

1283457139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 1283457139 is about 35825.3700469374. The cubic root of 1283457139 is about 1086.7436803013.

The spelling of 1283457139 in words is "one billion, two hundred eighty-three million, four hundred fifty-seven thousand, one hundred thirty-nine".