1864426001 has 2 divisors, whose sum is σ = 1864426002. Its totient is φ = 1864426000.

The previous prime is 1864425973. The next prime is 1864426007. The reversal of 1864426001 is 1006244681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1091641600 + 772784401 = 33040^2 + 27799^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864426001 - 2¹⁰ = 1864424977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1864426007) 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, 932213000 + 932213001.

It is an arithmetic number, because the mean of its divisors is an integer number (932213001).

Almost surely, 2^1864426001 is an apocalyptic number.

It is an amenable number.

1864426001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864426001 is an equidigital number, since it uses as much as digits as its factorization.

1864426001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 1864426001 is about 43178.9995368119. Note that the first 3 decimals coincide. The cubic root of 1864426001 is about 1230.7836460849.

The spelling of 1864426001 in words is "one billion, eight hundred sixty-four million, four hundred twenty-six thousand, one".