1290086957 has 2 divisors, whose sum is σ = 1290086958. Its totient is φ = 1290086956.

The previous prime is 1290086929. The next prime is 1290086977. The reversal of 1290086957 is 7596800921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 787026916 + 503060041 = 28054^2 + 22429^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290086957 - 2⁶ = 1290086893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1290086927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645043478 + 645043479.

It is an arithmetic number, because the mean of its divisors is an integer number (645043479).

Almost surely, 2^1290086957 is an apocalyptic number.

It is an amenable number.

1290086957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290086957 is an equidigital number, since it uses as much as digits as its factorization.

1290086957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 1290086957 is about 35917.7805132778. The cubic root of 1290086957 is about 1088.6116929240.

The spelling of 1290086957 in words is "one billion, two hundred ninety million, eighty-six thousand, nine hundred fifty-seven".