1523668001 has 2 divisors, whose sum is σ = 1523668002. Its totient is φ = 1523668000.

The previous prime is 1523667991. The next prime is 1523668031. The reversal of 1523668001 is 1008663251.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 854100625 + 669567376 = 29225^2 + 25876^2 .

It is a cyclic number.

It is not a de Polignac number, because 1523668001 - 2³⁰ = 449926177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1523668031) 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 as a sum of consecutive naturals, namely, 761834000 + 761834001.

It is an arithmetic number, because the mean of its divisors is an integer number (761834001).

Almost surely, 2^1523668001 is an apocalyptic number.

It is an amenable number.

1523668001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1523668001 is an equidigital number, since it uses as much as digits as its factorization.

1523668001 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 32.

The square root of 1523668001 is about 39034.1901542737. The cubic root of 1523668001 is about 1150.7035395117.

The spelling of 1523668001 in words is "one billion, five hundred twenty-three million, six hundred sixty-eight thousand, one".