1290526801 has 2 divisors, whose sum is σ = 1290526802. Its totient is φ = 1290526800.

The previous prime is 1290526781. The next prime is 1290526817. The reversal of 1290526801 is 1086250921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1228432401 + 62094400 = 35049^2 + 7880^2 .

It is a cyclic number.

It is not a de Polignac number, because 1290526801 - 2²⁵ = 1256972369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1290526201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645263400 + 645263401.

It is an arithmetic number, because the mean of its divisors is an integer number (645263401).

Almost surely, 2^1290526801 is an apocalyptic number.

It is an amenable number.

1290526801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290526801 is an equidigital number, since it uses as much as digits as its factorization.

1290526801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1290526801 is about 35923.9029199223. The cubic root of 1290526801 is about 1088.7353964498.

The spelling of 1290526801 in words is "one billion, two hundred ninety million, five hundred twenty-six thousand, eight hundred one".