1283376973 has 2 divisors, whose sum is σ = 1283376974. Its totient is φ = 1283376972.

The previous prime is 1283376953. The next prime is 1283376979. The reversal of 1283376973 is 3796733821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1178068329 + 105308644 = 34323^2 + 10262^2 .

It is a cyclic number.

It is not a de Polignac number, because 1283376973 - 2²¹ = 1281279821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1283376979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641688486 + 641688487.

It is an arithmetic number, because the mean of its divisors is an integer number (641688487).

Almost surely, 2^1283376973 is an apocalyptic number.

It is an amenable number.

1283376973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283376973 is an equidigital number, since it uses as much as digits as its factorization.

1283376973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 49.

The square root of 1283376973 is about 35824.2511854749. The cubic root of 1283376973 is about 1086.7210534692.

The spelling of 1283376973 in words is "one billion, two hundred eighty-three million, three hundred seventy-six thousand, nine hundred seventy-three".