1283770949 has 4 divisors (see below), whose sum is σ = 1283926464. Its totient is φ = 1283615436.

The previous prime is 1283770937. The next prime is 1283770973. The reversal of 1283770949 is 9490773821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9490773821 = 17 ⋅558280813.

It is a cyclic number.

It is not a de Polignac number, because 1283770949 - 2⁴ = 1283770933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1283770897 and 1283770906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283770909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64637 + ... + 82130.

It is an arithmetic number, because the mean of its divisors is an integer number (320981616).

Almost surely, 2^1283770949 is an apocalyptic number.

It is an amenable number.

1283770949 is a deficient number, since it is larger than the sum of its proper divisors (155515).

1283770949 is an equidigital number, since it uses as much as digits as its factorization.

1283770949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155514.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 1283770949 is about 35829.7494967520. The cubic root of 1283770949 is about 1086.8322440285.

The spelling of 1283770949 in words is "one billion, two hundred eighty-three million, seven hundred seventy thousand, nine hundred forty-nine".