1594402045 has 4 divisors (see below), whose sum is σ = 1913282460. Its totient is φ = 1275521632.

The previous prime is 1594402037. The next prime is 1594402063. The reversal of 1594402045 is 5402044951.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 225180036 + 1369222009 = 15006^2 + 37003^2 .

It is a cyclic number.

It is not a de Polignac number, because 1594402045 - 2³ = 1594402037 is a prime.

It is a super-2 number, since 2×1594402045² = 5084235762200364050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1594402045.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 159440200 + ... + 159440209.

It is an arithmetic number, because the mean of its divisors is an integer number (478320615).

Almost surely, 2^1594402045 is an apocalyptic number.

It is an amenable number.

1594402045 is a deficient number, since it is larger than the sum of its proper divisors (318880415).

1594402045 is an equidigital number, since it uses as much as digits as its factorization.

1594402045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318880414.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 1594402045 is about 39929.9642499214. The cubic root of 1594402045 is about 1168.2414580733.

Adding to 1594402045 its reverse (5402044951), we get a palindrome (6996446996).

The spelling of 1594402045 in words is "one billion, five hundred ninety-four million, four hundred two thousand, forty-five".