1290955013 has 2 divisors, whose sum is σ = 1290955014. Its totient is φ = 1290955012.

The previous prime is 1290955009. The next prime is 1290955031. The reversal of 1290955013 is 3105590921.

Together with next prime (1290955031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1282929124 + 8025889 = 35818^2 + 2833^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290955013 - 2² = 1290955009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1290955093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645477506 + 645477507.

It is an arithmetic number, because the mean of its divisors is an integer number (645477507).

Almost surely, 2^1290955013 is an apocalyptic number.

It is an amenable number.

1290955013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290955013 is an equidigital number, since it uses as much as digits as its factorization.

1290955013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150, while the sum is 35.

The square root of 1290955013 is about 35929.8624127619. The cubic root of 1290955013 is about 1088.8558015449.

The spelling of 1290955013 in words is "one billion, two hundred ninety million, nine hundred fifty-five thousand, thirteen".