1864563133 has 2 divisors, whose sum is σ = 1864563134. Its totient is φ = 1864563132.

The previous prime is 1864563101. The next prime is 1864563137. The reversal of 1864563133 is 3313654681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1404975289 + 459587844 = 37483^2 + 21438^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864563133 - 2⁵ = 1864563101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1864563137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932281566 + 932281567.

It is an arithmetic number, because the mean of its divisors is an integer number (932281567).

Almost surely, 2^1864563133 is an apocalyptic number.

It is an amenable number.

1864563133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864563133 is an equidigital number, since it uses as much as digits as its factorization.

1864563133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 40.

The square root of 1864563133 is about 43180.5874554759. The cubic root of 1864563133 is about 1230.8138208205.

The spelling of 1864563133 in words is "one billion, eight hundred sixty-four million, five hundred sixty-three thousand, one hundred thirty-three".