1864426027 has 2 divisors, whose sum is σ = 1864426028. Its totient is φ = 1864426026.

The previous prime is 1864426009. The next prime is 1864426073. The reversal of 1864426027 is 7206244681.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1864426027 is a prime.

It is not a weakly prime, because it can be changed into another prime (1864426007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932213013 + 932213014.

It is an arithmetic number, because the mean of its divisors is an integer number (932213014).

Almost surely, 2^1864426027 is an apocalyptic number.

1864426027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864426027 is an equidigital number, since it uses as much as digits as its factorization.

1864426027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 1864426027 is about 43178.9998378842. Note that the first 3 decimals coincide. The cubic root of 1864426027 is about 1230.7836518061.

The spelling of 1864426027 in words is "one billion, eight hundred sixty-four million, four hundred twenty-six thousand, twenty-seven".