1440564197 has 2 divisors, whose sum is σ = 1440564198. Its totient is φ = 1440564196.

The previous prime is 1440564157. The next prime is 1440564269. The reversal of 1440564197 is 7914650441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1440506116 + 58081 = 37954^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440564197 - 2¹⁴ = 1440547813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440564107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720282098 + 720282099.

It is an arithmetic number, because the mean of its divisors is an integer number (720282099).

Almost surely, 2^1440564197 is an apocalyptic number.

It is an amenable number.

1440564197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440564197 is an equidigital number, since it uses as much as digits as its factorization.

1440564197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1440564197 is about 37954.7651422058. The cubic root of 1440564197 is about 1129.3906958737.

The spelling of 1440564197 in words is "one billion, four hundred forty million, five hundred sixty-four thousand, one hundred ninety-seven".