1290947601 has 16 divisors (see below), whose sum is σ = 1777743360. Its totient is φ = 832421760.

The previous prime is 1290947599. The next prime is 1290947639. The reversal of 1290947601 is 1067490921.

It is not a de Polignac number, because 1290947601 - 2¹ = 1290947599 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1290947601.

It is not an unprimeable number, because it can be changed into a prime (1290947641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326605 + ... + 330533.

It is an arithmetic number, because the mean of its divisors is an integer number (111108960).

Almost surely, 2^1290947601 is an apocalyptic number.

It is an amenable number.

1290947601 is a deficient number, since it is larger than the sum of its proper divisors (486795759).

1290947601 is a wasteful number, since it uses less digits than its factorization.

1290947601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7496.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 1290947601 is about 35929.7592672147. The cubic root of 1290947601 is about 1088.8537176575.

The spelling of 1290947601 in words is "one billion, two hundred ninety million, nine hundred forty-seven thousand, six hundred one".