1290192487 has 2 divisors, whose sum is σ = 1290192488. Its totient is φ = 1290192486.

The previous prime is 1290192481. The next prime is 1290192539. The reversal of 1290192487 is 7842910921.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1290192487 - 2¹¹ = 1290190439 is a prime.

It is a super-2 number, since 2×1290192487² = 3329193307022490338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1290192481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645096243 + 645096244.

It is an arithmetic number, because the mean of its divisors is an integer number (645096244).

Almost surely, 2^1290192487 is an apocalyptic number.

1290192487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290192487 is an equidigital number, since it uses as much as digits as its factorization.

1290192487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1290192487 is about 35919.2495328062. The cubic root of 1290192487 is about 1088.6413751763.

The spelling of 1290192487 in words is "one billion, two hundred ninety million, one hundred ninety-two thousand, four hundred eighty-seven".