1595240666 has 4 divisors (see below), whose sum is σ = 2392861002. Its totient is φ = 797620332.

The previous prime is 1595240663. The next prime is 1595240701. The reversal of 1595240666 is 6660425951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6660425951 = 23 ⋅289583737.

It can be written as a sum of positive squares in only one way, i.e., 1408125625 + 187115041 = 37525^2 + 13679^2 .

It is not an unprimeable number, because it can be changed into a prime (1595240663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398810165 + ... + 398810168.

Almost surely, 2^1595240666 is an apocalyptic number.

1595240666 is a deficient number, since it is larger than the sum of its proper divisors (797620336).

1595240666 is an equidigital number, since it uses as much as digits as its factorization.

1595240666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797620335.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 1595240666 is about 39940.4640183361. The cubic root of 1595240666 is about 1168.4462454216.

The spelling of 1595240666 in words is "one billion, five hundred ninety-five million, two hundred forty thousand, six hundred sixty-six".