1283137505 has 8 divisors (see below), whose sum is σ = 1658208552. Its totient is φ = 947547648.

The previous prime is 1283137483. The next prime is 1283137561. The reversal of 1283137505 is 5057313821.

It can be written as a sum of positive squares in 4 ways, for example, as 174979984 + 1108157521 = 13228^2 + 33289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1283137505 - 2¹⁸ = 1282875361 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9870224 + ... + 9870353.

It is an arithmetic number, because the mean of its divisors is an integer number (207276069).

Almost surely, 2^1283137505 is an apocalyptic number.

It is an amenable number.

1283137505 is a deficient number, since it is larger than the sum of its proper divisors (375071047).

1283137505 is a wasteful number, since it uses less digits than its factorization.

1283137505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19740595.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 1283137505 is about 35820.9087684832. The cubic root of 1283137505 is about 1086.6534580782.

The spelling of 1283137505 in words is "one billion, two hundred eighty-three million, one hundred thirty-seven thousand, five hundred five".