1864774441 has 2 divisors, whose sum is σ = 1864774442. Its totient is φ = 1864774440.

The previous prime is 1864774409. The next prime is 1864774451. The reversal of 1864774441 is 1444774681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1833638041 + 31136400 = 42821^2 + 5580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864774441 - 2⁵ = 1864774409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1864774391 and 1864774400.

It is not a weakly prime, because it can be changed into another prime (1864774451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 932387220 + 932387221.

It is an arithmetic number, because the mean of its divisors is an integer number (932387221).

Almost surely, 2^1864774441 is an apocalyptic number.

It is an amenable number.

1864774441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1864774441 is an equidigital number, since it uses as much as digits as its factorization.

1864774441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 602112, while the sum is 46.

The square root of 1864774441 is about 43183.0341801036. The cubic root of 1864774441 is about 1230.8603144608.

The spelling of 1864774441 in words is "one billion, eight hundred sixty-four million, seven hundred seventy-four thousand, four hundred forty-one".