1864426073 has 2 divisors, whose sum is σ = 1864426074. Its totient is φ = 1864426072.

The previous prime is 1864426027. The next prime is 1864426079. The reversal of 1864426073 is 3706244681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1796742544 + 67683529 = 42388^2 + 8227^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864426073 - 2⁶ = 1864426009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1864426073.

It is not a weakly prime, because it can be changed into another prime (1864426079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932213036 + 932213037.

It is an arithmetic number, because the mean of its divisors is an integer number (932213037).

Almost surely, 2^1864426073 is an apocalyptic number.

It is an amenable number.

1864426073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864426073 is an equidigital number, since it uses as much as digits as its factorization.

1864426073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 1864426073 is about 43179.0003705505. Note that the first 3 decimals coincide. The cubic root of 1864426073 is about 1230.7836619282.

The spelling of 1864426073 in words is "one billion, eight hundred sixty-four million, four hundred twenty-six thousand, seventy-three".